diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index a01d25ebad1..69da019ef01 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -272,7 +272,7 @@ jobs:
         run: yarn build
         working-directory: a3p-integration
       - name: run proposals tests
-        run: yarn test
+        run: yarn test -m z:acceptance
         working-directory: a3p-integration
       - name: collect all core eval scripts
         # Core eval scripts will be copied under /tmp/core_eval_scripts directory
diff --git a/a3p-integration/proposals/n:upgrade-next/.gitignore b/a3p-integration/proposals/n:upgrade-next/.gitignore
index da0da987d7b..10c30e2fde7 100644
--- a/a3p-integration/proposals/n:upgrade-next/.gitignore
+++ b/a3p-integration/proposals/n:upgrade-next/.gitignore
@@ -4,3 +4,4 @@ add-OLIVES/
 upgrade-bank/
 upgrade-provisionPool/
 upgrade-orch-core/
+replace-electorate/
diff --git a/a3p-integration/proposals/n:upgrade-next/acceptInvites.js b/a3p-integration/proposals/n:upgrade-next/acceptInvites.js
new file mode 100644
index 00000000000..9567a56f7a8
--- /dev/null
+++ b/a3p-integration/proposals/n:upgrade-next/acceptInvites.js
@@ -0,0 +1,12 @@
+#!/usr/bin/env node
+
+import { agops, GOV1ADDR } from '@agoric/synthetic-chain';
+
+await agops.ec('committee', '--send-from', GOV1ADDR);
+await agops.ec(
+  'charter',
+  '--send-from',
+  GOV1ADDR,
+  '--name',
+  'econCommitteeCharter',
+);
diff --git a/a3p-integration/proposals/n:upgrade-next/agoric-tools.js b/a3p-integration/proposals/n:upgrade-next/agoric-tools.js
new file mode 100644
index 00000000000..f18ca816913
--- /dev/null
+++ b/a3p-integration/proposals/n:upgrade-next/agoric-tools.js
@@ -0,0 +1,31 @@
+import { queryVstorage } from '@agoric/synthetic-chain';
+import { makeMarshal, Remotable } from '@endo/marshal';
+
+const slotToRemotable = (_slotId, iface = 'Remotable') =>
+  Remotable(iface, undefined, {
+    getBoardId: () => _slotId,
+  });
+
+// /** @param {BoardRemote | object} val */
+const boardValToSlot = val => {
+  if ('getBoardId' in val) {
+    return val.getBoardId();
+  }
+  throw Error(`unknown obj in boardSlottingMarshaller.valToSlot ${val}`);
+};
+
+const boardSlottingMarshaller = slotToVal => {
+  return makeMarshal(boardValToSlot, slotToVal, {
+    serializeBodyFormat: 'smallcaps',
+  });
+};
+
+export const marshaller = boardSlottingMarshaller(slotToRemotable);
+
+export const queryVstorageFormatted = async (path, index = -1) => {
+  const data = await queryVstorage(path);
+
+  const formattedData = JSON.parse(data.value);
+  const formattedDataAtIndex = JSON.parse(formattedData.values.at(index));
+  return marshaller.fromCapData(formattedDataAtIndex);
+};
diff --git a/a3p-integration/proposals/n:upgrade-next/package.json b/a3p-integration/proposals/n:upgrade-next/package.json
index f88ce460a7e..465160effb6 100644
--- a/a3p-integration/proposals/n:upgrade-next/package.json
+++ b/a3p-integration/proposals/n:upgrade-next/package.json
@@ -11,7 +11,8 @@
       "vats/upgrade-bank.js upgrade-bank",
       "vats/upgrade-provisionPool.js upgrade-provisionPool",
       "testing/add-LEMONS.js add-LEMONS",
-      "testing/add-OLIVES.js add-OLIVES"
+      "testing/add-OLIVES.js add-OLIVES",
+      "inter-protocol/replace-electorate-core.js replace-electorate A3P_INTEGRATION"
     ],
     "type": "Software Upgrade Proposal"
   },
@@ -19,6 +20,8 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@agoric/synthetic-chain": "^0.3.0",
+    "@endo/init": "^1.1.5",
+    "@endo/marshal": "^1.5.4",
     "ava": "^5.3.1",
     "better-sqlite3": "^9.6.0",
     "execa": "^9.3.1"
diff --git a/a3p-integration/proposals/n:upgrade-next/prepare.sh b/a3p-integration/proposals/n:upgrade-next/prepare.sh
index cbf6c4d8fc1..5e3e993fc7c 100755
--- a/a3p-integration/proposals/n:upgrade-next/prepare.sh
+++ b/a3p-integration/proposals/n:upgrade-next/prepare.sh
@@ -7,3 +7,5 @@ set -uxeo pipefail
 # actions are executed in the previous chain software, and the effects are
 # persisted so they can be used in the steps after the upgrade is complete,
 # such as in the "use" or "test" steps, or further proposal layers.
+
+echo "FRAZZZZZ"
diff --git a/a3p-integration/proposals/n:upgrade-next/replaceElectorate.test.js b/a3p-integration/proposals/n:upgrade-next/replaceElectorate.test.js
new file mode 100644
index 00000000000..64e08cc48fc
--- /dev/null
+++ b/a3p-integration/proposals/n:upgrade-next/replaceElectorate.test.js
@@ -0,0 +1,50 @@
+import test from 'ava';
+import '@endo/init';
+import { GOV1ADDR, evalBundles, waitForBlock } from '@agoric/synthetic-chain';
+import { passStyleOf } from '@endo/marshal';
+import { queryVstorageFormatted } from './agoric-tools.js';
+
+const UPGRADE_PP_DIR = 'replace-electorate';
+
+test.skip('what', async t => {
+  await evalBundles(UPGRADE_PP_DIR);
+  await waitForBlock(2);
+  t.pass();
+});
+
+test.serial('should be able to view the new accepted invitations', async t => {
+  const instance = await queryVstorageFormatted(
+    `published.agoricNames.instance`,
+  );
+  const instances = Object.fromEntries(instance);
+
+  const wallet = await queryVstorageFormatted(
+    `published.wallet.${GOV1ADDR}.current`,
+  );
+  const usedInvitations = wallet.offerToUsedInvitation.map(v => v[1]);
+
+  const totalCharterInvitations = usedInvitations.filter(
+    v => v.value[0].description === 'charter member invitation',
+  ).length;
+
+  t.is(totalCharterInvitations, 2);
+
+  const totalCommitteeInvitations = usedInvitations.filter(v =>
+    v.value[0].description.startsWith('Voter'),
+  ).length;
+  t.is(totalCommitteeInvitations, 2);
+
+  const charterInvitation = usedInvitations.find(
+    v =>
+      v.value[0].instance.getBoardId() ===
+      instances.econCommitteeCharter.getBoardId(),
+  );
+  t.is(passStyleOf(charterInvitation), 'copyRecord');
+
+  const committeeInvitation = usedInvitations.find(
+    v =>
+      v.value[0].instance.getBoardId() ===
+      instances.economicCommittee.getBoardId(),
+  );
+  t.is(passStyleOf(committeeInvitation), 'copyRecord');
+});
diff --git a/a3p-integration/proposals/n:upgrade-next/test.sh b/a3p-integration/proposals/n:upgrade-next/test.sh
index 215f30f6aaf..76b660706f7 100755
--- a/a3p-integration/proposals/n:upgrade-next/test.sh
+++ b/a3p-integration/proposals/n:upgrade-next/test.sh
@@ -5,8 +5,9 @@
 
 GLOBIGNORE=initial.test.js
 
-# test the state right after upgrade
-yarn ava initial.test.js
+yarn ava ./replaceElectorate.test.js
+# # test the state right after upgrade
+# yarn ava initial.test.js
 
-# test more, in ways that changes system state
-yarn ava ./*.test.js
+# # test more, in ways that changes system state
+# yarn ava ./*.test.js
diff --git a/a3p-integration/proposals/n:upgrade-next/use.sh b/a3p-integration/proposals/n:upgrade-next/use.sh
new file mode 100644
index 00000000000..4f58010f31a
--- /dev/null
+++ b/a3p-integration/proposals/n:upgrade-next/use.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Exit when any command fails
+set -uxeo pipefail
+
+./acceptInvites.js
diff --git a/a3p-integration/proposals/n:upgrade-next/yarn.lock b/a3p-integration/proposals/n:upgrade-next/yarn.lock
index 5de3eb1fd07..78dc133a0f9 100644
--- a/a3p-integration/proposals/n:upgrade-next/yarn.lock
+++ b/a3p-integration/proposals/n:upgrade-next/yarn.lock
@@ -20,6 +20,113 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@endo/base64@npm:^1.0.8":
+  version: 1.0.8
+  resolution: "@endo/base64@npm:1.0.8"
+  checksum: 10c0/3501efbf866acc25b9ad0912ec2383e3b976c890a18dc67b5c6eb128433708db69e8ed1cc57190305266bdcbd132659aa87edfc6d02a9886b711e8b86adc21c0
+  languageName: node
+  linkType: hard
+
+"@endo/common@npm:^1.2.6":
+  version: 1.2.6
+  resolution: "@endo/common@npm:1.2.6"
+  dependencies:
+    "@endo/errors": "npm:^1.2.6"
+    "@endo/eventual-send": "npm:^1.2.6"
+    "@endo/promise-kit": "npm:^1.1.6"
+  checksum: 10c0/7cca372677bd1ab535a0f8fc250eca9bfc202ef7dfd24cac6ff1260003aa4512f8db18419dd632b3e57270a589fec54891496904ff2e8a97047f1e187e3f1401
+  languageName: node
+  linkType: hard
+
+"@endo/env-options@npm:^1.1.7":
+  version: 1.1.7
+  resolution: "@endo/env-options@npm:1.1.7"
+  checksum: 10c0/5784bd68790041b08d9ead4f6c29cc7871d2e554c23fc44fff38cb20b6b4e55cdba2f78d844ba5ad4b0818185c32475ff318c1b77890d628690d7c7a6ede9475
+  languageName: node
+  linkType: hard
+
+"@endo/errors@npm:^1.2.6":
+  version: 1.2.6
+  resolution: "@endo/errors@npm:1.2.6"
+  dependencies:
+    ses: "npm:^1.9.0"
+  checksum: 10c0/cbc541c2d26fbfeb1567dd1cdf0e1f110ee9866430c5a1b91d87270d6f00bc8293cc8512301217c4eda35e60677ce62a941d11eb32c7da1f72d450a011ad2bb5
+  languageName: node
+  linkType: hard
+
+"@endo/eventual-send@npm:^1.2.6":
+  version: 1.2.6
+  resolution: "@endo/eventual-send@npm:1.2.6"
+  dependencies:
+    "@endo/env-options": "npm:^1.1.7"
+  checksum: 10c0/6983d6b88bf4e99f6c469d4ca037793582b06cc0bfa2da085b5bc7ad67333a1fba6e5e7077b7f279be23ccfba1dff9e06c7f85f9980b09fd002227f89a673c11
+  languageName: node
+  linkType: hard
+
+"@endo/init@npm:^1.1.5":
+  version: 1.1.5
+  resolution: "@endo/init@npm:1.1.5"
+  dependencies:
+    "@endo/base64": "npm:^1.0.8"
+    "@endo/eventual-send": "npm:^1.2.6"
+    "@endo/lockdown": "npm:^1.0.11"
+    "@endo/promise-kit": "npm:^1.1.6"
+  checksum: 10c0/08abda8a0204450cb39c296270d074189f320cdeb03892e87b27a75f6b98c0b5d9c8471e242c53545843211fe713b01b281eec0eabc1c58ca0760a068b90335c
+  languageName: node
+  linkType: hard
+
+"@endo/lockdown@npm:^1.0.11":
+  version: 1.0.11
+  resolution: "@endo/lockdown@npm:1.0.11"
+  dependencies:
+    ses: "npm:^1.9.0"
+  checksum: 10c0/03bb96f370e7ee69d9d8e26b7b124b6381994d3b28a99dc2bcafe77139283701d7543b40e978226cd49443c149e64610e4dd49c32ada931610ba091809478a11
+  languageName: node
+  linkType: hard
+
+"@endo/marshal@npm:^1.5.4":
+  version: 1.5.4
+  resolution: "@endo/marshal@npm:1.5.4"
+  dependencies:
+    "@endo/common": "npm:^1.2.6"
+    "@endo/errors": "npm:^1.2.6"
+    "@endo/eventual-send": "npm:^1.2.6"
+    "@endo/nat": "npm:^5.0.11"
+    "@endo/pass-style": "npm:^1.4.4"
+    "@endo/promise-kit": "npm:^1.1.6"
+  checksum: 10c0/4668a3678567cfbeefc3a47217912ca3f5d8bdb37e0d5d53339953b4ab83950683505f45c0f5c30b415c989bb9df4fa0859849d23b11f5b1064b0da0a13943ab
+  languageName: node
+  linkType: hard
+
+"@endo/nat@npm:^5.0.11":
+  version: 5.0.11
+  resolution: "@endo/nat@npm:5.0.11"
+  checksum: 10c0/50cd9033657dd35288f0333a966984f788213f1c836e6772c0d731361d5854d0ce24b8a7d6f351d56618eb40f6b369e130c1ad939c83d5833246c09119b2e777
+  languageName: node
+  linkType: hard
+
+"@endo/pass-style@npm:^1.4.4":
+  version: 1.4.4
+  resolution: "@endo/pass-style@npm:1.4.4"
+  dependencies:
+    "@endo/env-options": "npm:^1.1.7"
+    "@endo/errors": "npm:^1.2.6"
+    "@endo/eventual-send": "npm:^1.2.6"
+    "@endo/promise-kit": "npm:^1.1.6"
+    "@fast-check/ava": "npm:^1.1.5"
+  checksum: 10c0/d6c6268b269d4c14541087ce6b2975f9e31847893d01360c0ea92392ae93316d94fbf59cd7299853a0fb5214176ad7ffc4616b9b2581fd720bdb55ef96d0beeb
+  languageName: node
+  linkType: hard
+
+"@endo/promise-kit@npm:^1.1.6":
+  version: 1.1.6
+  resolution: "@endo/promise-kit@npm:1.1.6"
+  dependencies:
+    ses: "npm:^1.9.0"
+  checksum: 10c0/d60de663e58f9de32b6705268c62c63c4721f1874813d3c10cae7846e921e4ea8a60c8622ef8c937741a3387fbc60110076b25304afedf270727af7b0c3fecb3
+  languageName: node
+  linkType: hard
+
 "@endo/zip@npm:^1.0.7":
   version: 1.0.7
   resolution: "@endo/zip@npm:1.0.7"
@@ -27,6 +134,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@fast-check/ava@npm:^1.1.5":
+  version: 1.2.1
+  resolution: "@fast-check/ava@npm:1.2.1"
+  dependencies:
+    fast-check: "npm:^3.0.0"
+  peerDependencies:
+    ava: ^4 || ^5 || ^6
+  checksum: 10c0/3800098fd7e8098102544a2f7a595351d063a7ebaeca18ed4901df5ec2679da2330ba8c0db2c820721d4cbb3e23d817ba22fec6d058957930e229f44fa71a684
+  languageName: node
+  linkType: hard
+
 "@isaacs/cliui@npm:^8.0.2":
   version: 8.0.2
   resolution: "@isaacs/cliui@npm:8.0.2"
@@ -119,18 +237,20 @@ __metadata:
   linkType: hard
 
 "acorn-walk@npm:^8.2.0":
-  version: 8.3.1
-  resolution: "acorn-walk@npm:8.3.1"
-  checksum: 10c0/a23d2f7c6b6cad617f4c77f14dfeb062a239208d61753e9ba808d916c550add92b39535467d2e6028280761ac4f5a904cc9df21530b84d3f834e3edef74ddde5
+  version: 8.3.4
+  resolution: "acorn-walk@npm:8.3.4"
+  dependencies:
+    acorn: "npm:^8.11.0"
+  checksum: 10c0/76537ac5fb2c37a64560feaf3342023dadc086c46da57da363e64c6148dc21b57d49ace26f949e225063acb6fb441eabffd89f7a3066de5ad37ab3e328927c62
   languageName: node
   linkType: hard
 
-"acorn@npm:^8.8.2":
-  version: 8.11.2
-  resolution: "acorn@npm:8.11.2"
+"acorn@npm:^8.11.0, acorn@npm:^8.8.2":
+  version: 8.13.0
+  resolution: "acorn@npm:8.13.0"
   bin:
     acorn: bin/acorn
-  checksum: 10c0/a3ed76c761b75ec54b1ec3068fb7f113a182e95aea7f322f65098c2958d232e3d211cb6dac35ff9c647024b63714bc528a26d54a925d1fef2c25585b4c8e4017
+  checksum: 10c0/f35dd53d68177c90699f4c37d0bb205b8abe036d955d0eb011ddb7f14a81e6fd0f18893731c457c1b5bd96754683f4c3d80d9a5585ddecaa53cdf84e0b3d68f7
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@@ -317,9 +437,9 @@ __metadata:
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 "binary-extensions@npm:^2.0.0":
-  version: 2.2.0
-  resolution: "binary-extensions@npm:2.2.0"
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+  version: 2.3.0
+  resolution: "binary-extensions@npm:2.3.0"
+  checksum: 10c0/75a59cafc10fb12a11d510e77110c6c7ae3f4ca22463d52487709ca7f18f69d886aa387557cc9864fbdb10153d0bdb4caacabf11541f55e89ed6e18d12ece2b5
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@@ -359,12 +479,12 @@ __metadata:
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   linkType: hard
 
-"braces@npm:^3.0.2, braces@npm:~3.0.2":
-  version: 3.0.2
-  resolution: "braces@npm:3.0.2"
+"braces@npm:^3.0.3, braces@npm:~3.0.2":
+  version: 3.0.3
+  resolution: "braces@npm:3.0.3"
   dependencies:
-    fill-range: "npm:^7.0.1"
-  checksum: 10c0/321b4d675791479293264019156ca322163f02dc06e3c4cab33bb15cd43d80b51efef69b0930cfde3acd63d126ebca24cd0544fa6f261e093a0fb41ab9dda381
+    fill-range: "npm:^7.1.1"
+  checksum: 10c0/7c6dfd30c338d2997ba77500539227b9d1f85e388a5f43220865201e407e076783d0881f2d297b9f80951b4c957fcf0b51c1d2d24227631643c3f7c284b0aa04
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@@ -399,9 +519,9 @@ __metadata:
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 "callsites@npm:^4.0.0":
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-  resolution: "callsites@npm:4.1.0"
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+  version: 4.2.0
+  resolution: "callsites@npm:4.2.0"
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@@ -422,8 +542,8 @@ __metadata:
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 "chokidar@npm:^3.5.3":
-  version: 3.5.3
-  resolution: "chokidar@npm:3.5.3"
+  version: 3.6.0
+  resolution: "chokidar@npm:3.6.0"
   dependencies:
     anymatch: "npm:~3.1.2"
     braces: "npm:~3.0.2"
@@ -436,7 +556,7 @@ __metadata:
   dependenciesMeta:
     fsevents:
       optional: true
-  checksum: 10c0/1076953093e0707c882a92c66c0f56ba6187831aa51bb4de878c1fec59ae611a3bf02898f190efec8e77a086b8df61c2b2a3ea324642a0558bdf8ee6c5dc9ca1
+  checksum: 10c0/8361dcd013f2ddbe260eacb1f3cb2f2c6f2b0ad118708a343a5ed8158941a39cb8fb1d272e0f389712e74ee90ce8ba864eece9e0e62b9705cb468a2f6d917462
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@@ -662,9 +782,9 @@ __metadata:
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 "emittery@npm:^1.0.1":
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-  resolution: "emittery@npm:1.0.1"
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+  version: 1.0.3
+  resolution: "emittery@npm:1.0.3"
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-  resolution: "escalade@npm:3.1.1"
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+  version: 3.2.0
+  resolution: "escalade@npm:3.2.0"
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@@ -786,6 +906,15 @@ __metadata:
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+"fast-check@npm:^3.0.0":
+  version: 3.22.0
+  resolution: "fast-check@npm:3.22.0"
+  dependencies:
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+  checksum: 10c0/15c70f83df655f9bdcec4f8ed7e3207a933bf6e22c220a4fafc7ea17a28a009bc5d0a85588689f5726e3514796745cb5b35e7295ce469ac286992548fd55cc1d
+  languageName: node
+  linkType: hard
+
 "fast-diff@npm:^1.2.0":
   version: 1.3.0
   resolution: "fast-diff@npm:1.3.0"
@@ -807,11 +936,11 @@ __metadata:
   linkType: hard
 
 "fastq@npm:^1.6.0":
-  version: 1.15.0
-  resolution: "fastq@npm:1.15.0"
+  version: 1.17.1
+  resolution: "fastq@npm:1.17.1"
   dependencies:
     reusify: "npm:^1.0.4"
-  checksum: 10c0/5ce4f83afa5f88c9379e67906b4d31bc7694a30826d6cc8d0f0473c966929017fda65c2174b0ec89f064ede6ace6c67f8a4fe04cef42119b6a55b0d465554c24
+  checksum: 10c0/1095f16cea45fb3beff558bb3afa74ca7a9250f5a670b65db7ed585f92b4b48381445cd328b3d87323da81e43232b5d5978a8201bde84e0cd514310f1ea6da34
   languageName: node
   linkType: hard
 
@@ -841,12 +970,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"fill-range@npm:^7.0.1":
-  version: 7.0.1
-  resolution: "fill-range@npm:7.0.1"
+"fill-range@npm:^7.1.1":
+  version: 7.1.1
+  resolution: "fill-range@npm:7.1.1"
   dependencies:
     to-regex-range: "npm:^5.0.1"
-  checksum: 10c0/7cdad7d426ffbaadf45aeb5d15ec675bbd77f7597ad5399e3d2766987ed20bda24d5fac64b3ee79d93276f5865608bb22344a26b9b1ae6c4d00bd94bf611623f
+  checksum: 10c0/b75b691bbe065472f38824f694c2f7449d7f5004aa950426a2c28f0306c60db9b880c0b0e4ed819997ffb882d1da02cfcfc819bddc94d71627f5269682edf018
   languageName: node
   linkType: hard
 
@@ -1040,9 +1169,9 @@ __metadata:
   linkType: hard
 
 "ignore@npm:^5.2.4":
-  version: 5.3.0
-  resolution: "ignore@npm:5.3.0"
-  checksum: 10c0/dc06bea5c23aae65d0725a957a0638b57e235ae4568dda51ca142053ed2c352de7e3bc93a69b2b32ac31966a1952e9a93c5ef2e2ab7c6b06aef9808f6b55b571
+  version: 5.3.2
+  resolution: "ignore@npm:5.3.2"
+  checksum: 10c0/f9f652c957983634ded1e7f02da3b559a0d4cc210fca3792cb67f1b153623c9c42efdc1c4121af171e295444459fc4a9201101fb041b1104a3c000bccb188337
   languageName: node
   linkType: hard
 
@@ -1346,12 +1475,12 @@ __metadata:
   linkType: hard
 
 "micromatch@npm:^4.0.4":
-  version: 4.0.5
-  resolution: "micromatch@npm:4.0.5"
+  version: 4.0.8
+  resolution: "micromatch@npm:4.0.8"
   dependencies:
-    braces: "npm:^3.0.2"
+    braces: "npm:^3.0.3"
     picomatch: "npm:^2.3.1"
-  checksum: 10c0/3d6505b20f9fa804af5d8c596cb1c5e475b9b0cd05f652c5b56141cf941bd72adaeb7a436fda344235cef93a7f29b7472efc779fcdb83b478eab0867b95cdeff
+  checksum: 10c0/166fa6eb926b9553f32ef81f5f531d27b4ce7da60e5baf8c021d043b27a388fb95e46a8038d5045877881e673f8134122b59624d5cecbd16eb50a42e7a6b5ca8
   languageName: node
   linkType: hard
 
@@ -1790,6 +1919,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"pure-rand@npm:^6.1.0":
+  version: 6.1.0
+  resolution: "pure-rand@npm:6.1.0"
+  checksum: 10c0/1abe217897bf74dcb3a0c9aba3555fe975023147b48db540aa2faf507aee91c03bf54f6aef0eb2bf59cc259a16d06b28eca37f0dc426d94f4692aeff02fb0e65
+  languageName: node
+  linkType: hard
+
 "queue-microtask@npm:^1.2.2":
   version: 1.2.3
   resolution: "queue-microtask@npm:1.2.3"
@@ -1873,6 +2009,8 @@ __metadata:
   resolution: "root-workspace-0b6124@workspace:."
   dependencies:
     "@agoric/synthetic-chain": "npm:^0.3.0"
+    "@endo/init": "npm:^1.1.5"
+    "@endo/marshal": "npm:^1.5.4"
     ava: "npm:^5.3.1"
     better-sqlite3: "npm:^9.6.0"
     execa: "npm:^9.3.1"
@@ -1902,7 +2040,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"semver@npm:^7.3.2, semver@npm:^7.3.5":
+"semver@npm:^7.3.2":
+  version: 7.6.3
+  resolution: "semver@npm:7.6.3"
+  bin:
+    semver: bin/semver.js
+  checksum: 10c0/88f33e148b210c153873cb08cfe1e281d518aaa9a666d4d148add6560db5cd3c582f3a08ccb91f38d5f379ead256da9931234ed122057f40bb5766e65e58adaf
+  languageName: node
+  linkType: hard
+
+"semver@npm:^7.3.5":
   version: 7.5.4
   resolution: "semver@npm:7.5.4"
   dependencies:
@@ -1922,6 +2069,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"ses@npm:^1.9.0":
+  version: 1.9.0
+  resolution: "ses@npm:1.9.0"
+  dependencies:
+    "@endo/env-options": "npm:^1.1.7"
+  checksum: 10c0/356f9601b04a87f33403a15fc627caf0c649d86d8d7ee1f4b3c75b947ab05c31b254c94c0aa26e9904862787c73950d5a60f3435deebe5dba23017e20c40b0cb
+  languageName: node
+  linkType: hard
+
 "shebang-command@npm:^2.0.0":
   version: 2.0.0
   resolution: "shebang-command@npm:2.0.0"
@@ -2323,9 +2479,9 @@ __metadata:
   linkType: hard
 
 "yocto-queue@npm:^1.0.0":
-  version: 1.0.0
-  resolution: "yocto-queue@npm:1.0.0"
-  checksum: 10c0/856117aa15cf5103d2a2fb173f0ab4acb12b4b4d0ed3ab249fdbbf612e55d1cadfd27a6110940e24746fb0a78cf640b522cc8bca76f30a3b00b66e90cf82abe0
+  version: 1.1.1
+  resolution: "yocto-queue@npm:1.1.1"
+  checksum: 10c0/cb287fe5e6acfa82690acb43c283de34e945c571a78a939774f6eaba7c285bacdf6c90fbc16ce530060863984c906d2b4c6ceb069c94d1e0a06d5f2b458e2a92
   languageName: node
   linkType: hard
 
diff --git a/a3p-integration/proposals/z:acceptance/governance.test.js b/a3p-integration/proposals/z:acceptance/governance.test.js
new file mode 100644
index 00000000000..ef8754c8dfe
--- /dev/null
+++ b/a3p-integration/proposals/z:acceptance/governance.test.js
@@ -0,0 +1,80 @@
+import test from 'ava';
+import '@endo/init';
+import { GOV1ADDR, GOV2ADDR, GOV3ADDR } from '@agoric/synthetic-chain';
+import { governanceDriver, walletUtils, waitUntil } from './test-lib/index.js';
+import { getLastUpdate } from './test-lib/wallet.js';
+
+const governanceAddresses = [GOV1ADDR, GOV2ADDR, GOV3ADDR];
+
+test.serial(
+  'economic committee can make governance proposal and vote on it',
+  async t => {
+    const { readLatestHead } = walletUtils;
+
+    /** @type {any} */
+    const instance = await readLatestHead(`published.agoricNames.instance`);
+    const instances = Object.fromEntries(instance);
+
+    /** @type {any} */
+    const wallet = await readLatestHead(`published.wallet.${GOV1ADDR}.current`);
+    const usedInvitations = wallet.offerToUsedInvitation;
+
+    const charterInvitation = usedInvitations.find(
+      v =>
+        v[1].value[0].instance.getBoardId() ===
+        instances.econCommitteeCharter.getBoardId(),
+    );
+
+    const committeeInvitation = usedInvitations.find(
+      v =>
+        v[1].value[0].instance.getBoardId() ===
+        instances.economicCommittee.getBoardId(),
+    );
+
+    t.log('proposing on param change');
+    const params = {
+      ChargingPeriod: 400n,
+    };
+    const path = { paramPath: { key: 'governedParams' } };
+
+    await governanceDriver.proposeVaultDirectorParamChange(
+      GOV1ADDR,
+      params,
+      path,
+      charterInvitation[0],
+    );
+
+    const questionUpdate = await getLastUpdate(GOV1ADDR, walletUtils);
+    t.like(questionUpdate, {
+      status: { numWantsSatisfied: 1 },
+    });
+
+    t.log('Voting on param change');
+    await Promise.all(
+      governanceAddresses.map(address =>
+        governanceDriver.voteOnProposedChanges(address, committeeInvitation[0]),
+      ),
+    );
+
+    const voteUpdates = await Promise.all(
+      governanceAddresses.map(address => getLastUpdate(address, walletUtils)),
+    );
+    voteUpdates.forEach(voteUpdate => {
+      t.like(voteUpdate, {
+        status: { numWantsSatisfied: 1 },
+      });
+    });
+
+    /** @type {any} */
+    const latestQuestion = await readLatestHead(
+      'published.committees.Economic_Committee.latestQuestion',
+    );
+    await waitUntil(latestQuestion.closingRule.deadline);
+
+    t.log('check if latest outcome is correct');
+    const latestOutcome = await readLatestHead(
+      'published.committees.Economic_Committee.latestOutcome',
+    );
+    t.like(latestOutcome, { outcome: 'win' });
+  },
+);
diff --git a/a3p-integration/proposals/z:acceptance/package.json b/a3p-integration/proposals/z:acceptance/package.json
index a5910e5ded6..9004540f415 100644
--- a/a3p-integration/proposals/z:acceptance/package.json
+++ b/a3p-integration/proposals/z:acceptance/package.json
@@ -14,6 +14,7 @@
     "@endo/errors": "^1.2.2",
     "@endo/far": "^1.1.5",
     "@endo/init": "^1.1.4",
+    "@endo/marshal": "^1.5.3",
     "ava": "^6.1.2",
     "execa": "^9.3.1",
     "tsx": "^4.17.0"
diff --git a/a3p-integration/proposals/z:acceptance/test-lib/governance.js b/a3p-integration/proposals/z:acceptance/test-lib/governance.js
new file mode 100644
index 00000000000..4019b617910
--- /dev/null
+++ b/a3p-integration/proposals/z:acceptance/test-lib/governance.js
@@ -0,0 +1,124 @@
+import { agops, agoric, executeOffer } from '@agoric/synthetic-chain';
+import { makeRpcUtils } from './rpc.js';
+
+export const makeGovernanceDriver = async (fetch, networkConfig) => {
+  const { readLatestHead, marshaller } = await makeRpcUtils(
+    { fetch },
+    networkConfig,
+  );
+  const generateVoteOffer = async previousOfferId => {
+    const id = `propose-${Date.now()}`;
+
+    /**
+     * @type {object}
+     */
+    const latestQuestionRecord = await readLatestHead(
+      'published.committees.Economic_Committee.latestQuestion',
+    );
+
+    const chosenPositions = [latestQuestionRecord.positions[0]];
+    const body = {
+      method: 'executeOffer',
+      offer: {
+        id,
+        invitationSpec: {
+          invitationMakerName: 'makeVoteInvitation',
+          previousOffer: previousOfferId,
+          source: 'continuing',
+          invitationArgs: harden([
+            chosenPositions,
+            latestQuestionRecord.questionHandle,
+          ]),
+        },
+        proposal: {},
+      },
+    };
+
+    const capData = marshaller.toCapData(harden(body));
+    return JSON.stringify(capData);
+  };
+  const voteOnProposedChanges = async (address, committeeAcceptOfferId) => {
+    await null;
+    const offerId =
+      committeeAcceptOfferId ||
+      (await agops.ec(
+        'find-continuing-id',
+        '--for',
+        'Voter0',
+        '--from',
+        address,
+      ));
+
+    return executeOffer(address, generateVoteOffer(offerId));
+  };
+  const generateVaultDirectorParamChange = async (
+    previousOfferId,
+    voteDur,
+    params,
+    paramsPath,
+  ) => {
+    const voteDurSec = BigInt(voteDur);
+    const toSec = ms => BigInt(Math.round(ms / 1000));
+
+    const id = `propose-${Date.now()}`;
+    const deadline = toSec(Date.now()) + voteDurSec;
+
+    const a = await agoric.follow(
+      '-lF',
+      ':published.agoricNames.instance',
+      '-o',
+      'text',
+    );
+    const instance = Object.fromEntries(marshaller.fromCapData(JSON.parse(a)));
+    assert(instance.VaultFactory);
+
+    const body = {
+      method: 'executeOffer',
+      offer: {
+        id,
+        invitationSpec: {
+          invitationMakerName: 'VoteOnParamChange',
+          previousOffer: previousOfferId,
+          source: 'continuing',
+        },
+        offerArgs: {
+          deadline,
+          instance: instance.VaultFactory,
+          params,
+          path: paramsPath,
+        },
+        proposal: {},
+      },
+    };
+
+    const capData = marshaller.toCapData(harden(body));
+    return JSON.stringify(capData);
+  };
+  const proposeVaultDirectorParamChange = async (
+    address,
+    params,
+    path,
+    charterAcceptOfferId,
+  ) => {
+    await null;
+    const offerId =
+      charterAcceptOfferId ||
+      (await agops.ec(
+        'find-continuing-id',
+        '--for',
+        `${'charter\\ member\\ invitation'}`,
+        '--from',
+        address,
+      ));
+
+    return executeOffer(
+      address,
+      generateVaultDirectorParamChange(offerId, 10, params, path),
+    );
+  };
+
+  return {
+    voteOnProposedChanges,
+    proposeVaultDirectorParamChange,
+  };
+};
diff --git a/a3p-integration/proposals/z:acceptance/test-lib/index.js b/a3p-integration/proposals/z:acceptance/test-lib/index.js
index 0c6fffa980a..0284a5953be 100644
--- a/a3p-integration/proposals/z:acceptance/test-lib/index.js
+++ b/a3p-integration/proposals/z:acceptance/test-lib/index.js
@@ -1,6 +1,7 @@
 /* global fetch setTimeout */
 import { execFileSync } from 'child_process';
 import { makeWalletUtils } from './wallet.js';
+import { makeGovernanceDriver } from './governance.js';
 
 export const networkConfig = {
   rpcAddrs: ['http://0.0.0.0:26657'],
@@ -20,3 +21,14 @@ export const walletUtils = await makeWalletUtils(
   { delay, execFileSync, fetch },
   networkConfig,
 );
+
+// eslint-disable-next-line @jessie.js/safe-await-separator -- buggy version
+export const governanceDriver = await makeGovernanceDriver(
+  fetch,
+  networkConfig,
+);
+
+export const waitUntil = async timestamp => {
+  const timeDelta = Math.floor(Date.now() / 1000) - Number(timestamp);
+  await delay(timeDelta);
+};
diff --git a/a3p-integration/proposals/z:acceptance/test.sh b/a3p-integration/proposals/z:acceptance/test.sh
index f9982b31916..6508e033b5c 100755
--- a/a3p-integration/proposals/z:acceptance/test.sh
+++ b/a3p-integration/proposals/z:acceptance/test.sh
@@ -10,6 +10,9 @@ yarn ava initial.test.js
 # XXX some of these tests have path dependencies so no globs
 yarn ava core-eval.test.js
 
+echo ACCEPTANCE TESTING governance
+yarn ava governance.test.js
+
 npm install -g tsx
 scripts/test-vaults.mts
 
diff --git a/a3p-integration/proposals/z:acceptance/yarn.lock b/a3p-integration/proposals/z:acceptance/yarn.lock
index 72977f2a884..5cd3b8df234 100644
--- a/a3p-integration/proposals/z:acceptance/yarn.lock
+++ b/a3p-integration/proposals/z:acceptance/yarn.lock
@@ -2516,6 +2516,7 @@ __metadata:
     "@endo/errors": "npm:^1.2.2"
     "@endo/far": "npm:^1.1.5"
     "@endo/init": "npm:^1.1.4"
+    "@endo/marshal": "npm:^1.5.3"
     ava: "npm:^6.1.2"
     execa: "npm:^9.3.1"
     tsx: "npm:^4.17.0"
diff --git a/golang/cosmos/app/upgrade.go b/golang/cosmos/app/upgrade.go
index 12cd6eb4a77..cd56b5a5e3d 100644
--- a/golang/cosmos/app/upgrade.go
+++ b/golang/cosmos/app/upgrade.go
@@ -92,6 +92,7 @@ func unreleasedUpgradeHandler(app *GaiaApp, targetUpgrade string) func(sdk.Conte
 			// Each CoreProposalStep runs sequentially, and can be constructed from
 			// one or more modules executing in parallel within the step.
 			CoreProposalSteps = []vm.CoreProposalStep{
+				vm.CoreProposalStepForModules("@agoric/builders/scripts/inter-protocol/replace-electorate-core.js"),
 				vm.CoreProposalStepForModules(
 					// Upgrade to new liveslots for repaired vow usage.
 					"@agoric/builders/scripts/vats/upgrade-orch-core.js",
diff --git a/packages/builders/scripts/inter-protocol/replace-electorate-core.js b/packages/builders/scripts/inter-protocol/replace-electorate-core.js
index 1db1ec482fc..60724565d71 100644
--- a/packages/builders/scripts/inter-protocol/replace-electorate-core.js
+++ b/packages/builders/scripts/inter-protocol/replace-electorate-core.js
@@ -16,25 +16,6 @@
 import { makeHelpers } from '@agoric/deploy-script-support';
 import { getManifestForReplaceAllElectorates } from '@agoric/inter-protocol/src/proposals/replaceElectorate.js';
 
-/** @type {import('@agoric/deploy-script-support/src/externalTypes.js').CoreEvalBuilder} */
-export const defaultProposalBuilder = async ({ publishRef, install }, opts) => {
-  return harden({
-    sourceSpec: '@agoric/inter-protocol/src/proposals/replaceElectorate.js',
-    getManifestCall: [
-      getManifestForReplaceAllElectorates.name,
-      {
-        ...opts,
-        economicCommitteeRef: publishRef(
-          install(
-            '@agoric/governance/src/committee.js',
-            '../bundles/bundle-committee.js',
-          ),
-        ),
-      },
-    ],
-  });
-};
-
 const configurations = {
   MAINNET: {
     committeeName: 'Economic Committee',
@@ -93,12 +74,35 @@ const configurations = {
   },
 };
 
+/** @type {import('@agoric/deploy-script-support/src/externalTypes.js').CoreEvalBuilder} */
+export const defaultProposalBuilder = async ({ publishRef, install }, opts) => {
+  const variant = 'A3P_INTEGRATION';
+  const config = configurations[variant];
+  console.log('fraz 2');
+  return harden({
+    sourceSpec: '@agoric/inter-protocol/src/proposals/replaceElectorate.js',
+    getManifestCall: [
+      getManifestForReplaceAllElectorates.name,
+      {
+        ...config,
+        economicCommitteeRef: publishRef(
+          install(
+            '@agoric/governance/src/committee.js',
+            '../bundles/bundle-committee.js',
+          ),
+        ),
+      },
+    ],
+  });
+};
+
 const { keys } = Object;
 const Usage = `agoric run replace-electorate-core.js ${keys(configurations).join(' | ')}`;
 export default async (homeP, endowments) => {
   const { scriptArgs } = endowments;
-  const variant = scriptArgs?.[0];
+  const variant = 'A3P_INTEGRATION';
   const config = configurations[variant];
+  console.log('fraz 1');
   if (!config) {
     console.error(Usage);
     process.exit(1);