diff --git a/src/lib/apiClient.ts b/src/lib/apiClient.ts
index 8f86ce6..72d7702 100644
--- a/src/lib/apiClient.ts
+++ b/src/lib/apiClient.ts
@@ -228,6 +228,7 @@ export type ChamberVoteChoice = "yes" | "no" | "abstain";
 export async function apiChamberVote(input: {
   proposalId: string;
   choice: ChamberVoteChoice;
+  score?: number;
   idempotencyKey?: string;
 }): Promise<{
   ok: true;
@@ -240,7 +241,45 @@ export async function apiChamberVote(input: {
     "/api/command",
     {
       type: "chamber.vote",
-      payload: { proposalId: input.proposalId, choice: input.choice },
+      payload: {
+        proposalId: input.proposalId,
+        choice: input.choice,
+        ...(input.choice === "yes" && typeof input.score === "number"
+          ? { score: input.score }
+          : {}),
+      },
+      idempotencyKey: input.idempotencyKey,
+    },
+    input.idempotencyKey
+      ? { headers: { "idempotency-key": input.idempotencyKey } }
+      : undefined,
+  );
+}
+
+export async function apiChamberMultiplierSubmit(input: {
+  chamberId: string;
+  multiplierTimes10: number;
+  idempotencyKey?: string;
+}): Promise<{
+  ok: true;
+  type: "chamber.multiplier.submit";
+  chamberId: string;
+  submission: { multiplierTimes10: number };
+  aggregate: { submissions: number; avgTimes10: number | null };
+  applied: {
+    updated: boolean;
+    prevMultiplierTimes10: number;
+    nextMultiplierTimes10: number;
+  } | null;
+}> {
+  return await apiPost(
+    "/api/command",
+    {
+      type: "chamber.multiplier.submit",
+      payload: {
+        chamberId: input.chamberId,
+        multiplierTimes10: input.multiplierTimes10,
+      },
       idempotencyKey: input.idempotencyKey,
     },
     input.idempotencyKey
diff --git a/src/pages/cm/CMPanel.tsx b/src/pages/cm/CMPanel.tsx
index 1f54ce6..6704d9a 100644
--- a/src/pages/cm/CMPanel.tsx
+++ b/src/pages/cm/CMPanel.tsx
@@ -12,7 +12,11 @@ import { HintLabel } from "@/components/Hint";
 import { Surface } from "@/components/Surface";
 import { PageHint } from "@/components/PageHint";
 import { NoDataYetBar } from "@/components/NoDataYetBar";
-import { apiChambers } from "@/lib/apiClient";
+import {
+  apiChambers,
+  apiChamberMultiplierSubmit,
+  apiMyGovernance,
+} from "@/lib/apiClient";
 import type { ChamberDto } from "@/types/api";
 
 const CMPanel: React.FC = () => {
@@ -21,24 +25,44 @@ const CMPanel: React.FC = () => {
       current: number;
       suggested: number;
       member: boolean;
+      submissions: number;
     }
   > | null>(null);
   const [loadError, setLoadError] = useState<string | null>(null);
+  const [submitError, setSubmitError] = useState<string | null>(null);
+  const [submittingId, setSubmittingId] = useState<string | null>(null);
+  const [submittingAll, setSubmittingAll] = useState(false);
 
   useEffect(() => {
     let active = true;
     (async () => {
       try {
-        const res = await apiChambers();
+        const [chambersRes, governanceRes] = await Promise.allSettled([
+          apiChambers(),
+          apiMyGovernance(),
+        ]);
         if (!active) return;
+        if (chambersRes.status !== "fulfilled") {
+          setChambers([]);
+          setLoadError(
+            chambersRes.reason?.message ?? "Failed to load chamber multipliers",
+          );
+          return;
+        }
+        const myChamberIds =
+          governanceRes.status === "fulfilled"
+            ? governanceRes.value.myChamberIds
+            : [];
+        const items = chambersRes.value.items;
         setChambers(
-          res.items.map((chamber) => ({
+          items.map((chamber) => ({
             id: chamber.id,
             name: chamber.name,
             multiplier: chamber.multiplier,
             current: chamber.multiplier,
             suggested: chamber.multiplier,
-            member: chamber.id === "engineering" || chamber.id === "product",
+            member: myChamberIds.includes(chamber.id),
+            submissions: 0,
           })),
         );
         setLoadError(null);
@@ -61,7 +85,50 @@ const CMPanel: React.FC = () => {
     );
   };
 
+  const handleSubmit = async (chamberId: string) => {
+    if (!chambers) return;
+    const target = chambers.find((chamber) => chamber.id === chamberId);
+    if (!target) return;
+    if (target.member) return;
+    setSubmittingId(chamberId);
+    setSubmitError(null);
+    try {
+      const result = await apiChamberMultiplierSubmit({
+        chamberId,
+        multiplierTimes10: Math.round(target.suggested * 10),
+      });
+      setChambers((prev) =>
+        prev
+          ? prev.map((chamber) => {
+              if (chamber.id !== chamberId) return chamber;
+              const nextTimes10 =
+                result.applied?.nextMultiplierTimes10 ??
+                result.aggregate.avgTimes10 ??
+                Math.round(chamber.suggested * 10);
+              return {
+                ...chamber,
+                current: nextTimes10 / 10,
+                submissions: result.aggregate.submissions,
+              };
+            })
+          : prev,
+      );
+    } catch (error) {
+      setSubmitError((error as Error).message);
+    } finally {
+      setSubmittingId(null);
+    }
+  };
+
   const nonMemberSuggestions = (chambers ?? []).filter((c) => !c.member);
+  const handleSubmitAll = async () => {
+    if (!chambers || nonMemberSuggestions.length === 0) return;
+    setSubmittingAll(true);
+    for (const chamber of nonMemberSuggestions) {
+      await handleSubmit(chamber.id);
+    }
+    setSubmittingAll(false);
+  };
 
   return (
     <div className="flex flex-col gap-6">
@@ -79,6 +146,11 @@ const CMPanel: React.FC = () => {
       {chambers !== null && chambers.length === 0 && !loadError ? (
         <NoDataYetBar label="chambers" />
       ) : null}
+      {submitError ? (
+        <Card className="border-dashed px-4 py-6 text-center text-sm text-destructive">
+          CM submission failed: {submitError}
+        </Card>
+      ) : null}
       <Card>
         <CardHeader className="pb-2">
           <CardTitle>Overview</CardTitle>
@@ -126,6 +198,17 @@ const CMPanel: React.FC = () => {
                     className="w-full"
                   />
                 </div>
+                <div className="flex items-center justify-between text-xs text-muted">
+                  <span>{chamber.submissions} submissions</span>
+                  <Button
+                    size="sm"
+                    variant="ghost"
+                    disabled={chamber.member || submittingId === chamber.id}
+                    onClick={() => handleSubmit(chamber.id)}
+                  >
+                    {submittingId === chamber.id ? "Submitting…" : "Submit"}
+                  </Button>
+                </div>
                 {chamber.member && (
                   <p className="text-xs text-muted">
                     You cannot set M for chambers you belong to.
@@ -138,8 +221,12 @@ const CMPanel: React.FC = () => {
       </Card>
 
       <div className="flex justify-end">
-        <Button size="sm" disabled={nonMemberSuggestions.length === 0}>
-          Submit suggestions
+        <Button
+          size="sm"
+          disabled={nonMemberSuggestions.length === 0 || submittingAll}
+          onClick={handleSubmitAll}
+        >
+          {submittingAll ? "Submitting…" : "Submit suggestions"}
         </Button>
       </div>
     </div>
diff --git a/src/pages/proposals/ProposalChamber.tsx b/src/pages/proposals/ProposalChamber.tsx
index e40f8e5..0149d2e 100644
--- a/src/pages/proposals/ProposalChamber.tsx
+++ b/src/pages/proposals/ProposalChamber.tsx
@@ -4,6 +4,7 @@ import { StatTile } from "@/components/StatTile";
 import { PageHint } from "@/components/PageHint";
 import { ProposalPageHeader } from "@/components/ProposalPageHeader";
 import { VoteButton } from "@/components/VoteButton";
+import { Input } from "@/components/primitives/input";
 import {
   ProposalInvisionInsightCard,
   ProposalSummaryCard,
@@ -29,6 +30,7 @@ const ProposalChamber: React.FC = () => {
   const [submitting, setSubmitting] = useState(false);
   const [timeline, setTimeline] = useState<ProposalTimelineItemDto[]>([]);
   const [timelineError, setTimelineError] = useState<string | null>(null);
+  const [yesScore, setYesScore] = useState(5);
 
   const loadPage = useCallback(async () => {
     if (!id) return;
@@ -117,12 +119,19 @@ const ProposalChamber: React.FC = () => {
     .map((v) => Number(v.trim()));
   const openSlots = Math.max(totalSlots - filledSlots, 0);
 
-  const handleVote = async (choice: "yes" | "no" | "abstain") => {
+  const handleVote = async (
+    choice: "yes" | "no" | "abstain",
+    score?: number,
+  ) => {
     if (!id || submitting) return;
     setSubmitting(true);
     setSubmitError(null);
     try {
-      await apiChamberVote({ proposalId: id, choice });
+      await apiChamberVote({
+        proposalId: id,
+        choice,
+        score: choice === "yes" ? score : undefined,
+      });
       await loadPage();
     } catch (error) {
       setSubmitError((error as Error).message);
@@ -145,8 +154,27 @@ const ProposalChamber: React.FC = () => {
             tone="accent"
             label="Vote yes"
             disabled={submitting}
-            onClick={() => handleVote("yes")}
+            onClick={() => handleVote("yes", yesScore)}
           />
+          <div className="flex items-center gap-2 rounded-full border border-border bg-panel px-3 py-2 text-sm text-text">
+            <span className="text-xs font-semibold text-muted uppercase">
+              CM score
+            </span>
+            <Input
+              type="number"
+              min={1}
+              max={10}
+              step={1}
+              value={yesScore}
+              onChange={(event) => {
+                const next = Number(event.target.value);
+                if (Number.isFinite(next)) {
+                  setYesScore(Math.min(Math.max(Math.round(next), 1), 10));
+                }
+              }}
+              className="h-8 w-16"
+            />
+          </div>
           <VoteButton
             tone="destructive"
             label="Vote no"