diff --git a/frontend/src/components/stages/ranking_reveal_view.ts b/frontend/src/components/stages/ranking_reveal_view.ts
index 33106884f..69d04bf4c 100644
--- a/frontend/src/components/stages/ranking_reveal_view.ts
+++ b/frontend/src/components/stages/ranking_reveal_view.ts
@@ -128,9 +128,11 @@ export class RankingReveal extends MobxLitElement {
       participantMap = {[currentId]: participantMap[currentId]};
     }
 
-    const maxOptions = Math.max(
-      ...Object.values(participantMap).map((lst) => lst.length),
-    );
+    const participantAnswers = Object.values(participantMap);
+    const maxOptions =
+      participantAnswers.length > 0
+        ? Math.max(...participantAnswers.map((lst) => lst.length))
+        : 0;
 
     return html`
       <div>${headerText}</div>
@@ -183,6 +185,7 @@ export class RankingReveal extends MobxLitElement {
       </h2>
       ${this.renderWinner()}
       <div class="divider"></div>
+      ${this.renderResultsTable()}
     `;
   }
 }
diff --git a/functions/src/stages/asset_allocation.utils.ts b/functions/src/stages/asset_allocation.utils.ts
index e569e403a..61dc2271e 100644
--- a/functions/src/stages/asset_allocation.utils.ts
+++ b/functions/src/stages/asset_allocation.utils.ts
@@ -3,7 +3,6 @@ import {
   AssetAllocationStageParticipantAnswer,
   AssetAllocationStagePublicData,
   ParticipantProfileExtended,
-  createAssetAllocationStagePublicData,
 } from '@deliberation-lab/utils';
 
 import * as admin from 'firebase-admin';
@@ -27,15 +26,16 @@ export async function addParticipantAnswerToAssetAllocationStagePublicData(
 
     // Read current public data first (all reads must come before writes)
     const publicDoc = await transaction.get(publicDocument);
-    let publicData = publicDoc.data() as
+    const publicData = publicDoc.data() as
       | AssetAllocationStagePublicData
       | undefined;
 
-    // Create initial public data if it doesn't exist
+    // Public stage data should be initialized on cohort creation
     if (!publicData) {
-      publicData = createAssetAllocationStagePublicData({
-        id: stage.id,
-      });
+      console.warn(
+        `Public stage data not found for stage ${stage.id} in cohort ${participant.currentCohortId}. This should have been initialized on cohort creation.`,
+      );
+      return;
     }
 
     // Update public data with participant's allocation
diff --git a/functions/src/stages/flipcard.utils.ts b/functions/src/stages/flipcard.utils.ts
index c0379c392..4e58504b0 100644
--- a/functions/src/stages/flipcard.utils.ts
+++ b/functions/src/stages/flipcard.utils.ts
@@ -30,24 +30,31 @@ export async function addParticipantAnswerToFlipCardStagePublicData(
     const publicDoc = await transaction.get(publicDocument);
     const publicData = publicDoc.data() as FlipCardStagePublicData | undefined;
 
-    if (publicData) {
-      // Update public data with participant's flip history and selections
-      const updatedPublicData: FlipCardStagePublicData = {
-        ...publicData,
-        participantFlipHistory: {
-          ...publicData.participantFlipHistory,
-          [participant.publicId]: answer.flipHistory,
-        },
-        participantSelections: {
-          ...publicData.participantSelections,
-          [participant.publicId]: answer.selectedCardIds,
-        },
-      };
-
-      transaction.set(publicDocument, {
-        ...updatedPublicData,
-        timestamp: admin.firestore.FieldValue.serverTimestamp(),
-      });
+    if (!publicData) {
+      console.warn(
+        `Public stage data not found for stage ${stage.id} in cohort ${participant.currentCohortId}. This should have been initialized on cohort creation.`,
+      );
+      return;
     }
+
+    const currentPublicData = publicData;
+
+    // Update public data with participant's flip history and selections
+    const updatedPublicData: FlipCardStagePublicData = {
+      ...currentPublicData,
+      participantFlipHistory: {
+        ...currentPublicData.participantFlipHistory,
+        [participant.publicId]: answer.flipHistory,
+      },
+      participantSelections: {
+        ...currentPublicData.participantSelections,
+        [participant.publicId]: answer.selectedCardIds,
+      },
+    };
+
+    transaction.set(publicDocument, {
+      ...updatedPublicData,
+      timestamp: admin.firestore.FieldValue.serverTimestamp(),
+    });
   });
 }
diff --git a/functions/src/stages/multi_asset_allocation.utils.ts b/functions/src/stages/multi_asset_allocation.utils.ts
index 4cc3bfdc9..c5c0a8010 100644
--- a/functions/src/stages/multi_asset_allocation.utils.ts
+++ b/functions/src/stages/multi_asset_allocation.utils.ts
@@ -4,7 +4,7 @@ import {
   MultiAssetAllocationStagePublicData,
   ParticipantProfile,
 } from '@deliberation-lab/utils';
-import * as admin from 'firebase-admin';
+
 import {app} from '../app';
 
 /**
@@ -42,16 +42,18 @@ export async function addParticipantAnswerToMultiAssetAllocationStagePublicData(
       | undefined;
 
     if (!publicData) {
-      console.error(
-        `Public data for stage ${stage.id} does not exist. Cannot update.`,
+      console.warn(
+        `Public stage data not found for stage ${stage.id} in cohort ${participant.currentCohortId}. This should have been initialized on cohort creation.`,
       );
       return;
     }
 
+    const currentPublicData = publicData;
+
     const updatedPublicData: MultiAssetAllocationStagePublicData = {
-      ...publicData,
+      ...currentPublicData,
       participantAnswerMap: {
-        ...publicData.participantAnswerMap,
+        ...currentPublicData.participantAnswerMap,
         [participant.publicId]: answer,
       },
     };
diff --git a/functions/src/stages/ranking.utils.ts b/functions/src/stages/ranking.utils.ts
index 97adedfdd..14ab48e87 100644
--- a/functions/src/stages/ranking.utils.ts
+++ b/functions/src/stages/ranking.utils.ts
@@ -41,9 +41,18 @@ export async function addParticipantAnswerToRankingStagePublicData(
       .collection('publicStageData')
       .doc(LAS_WTL_STAGE_ID);
     // Update public stage data (current participant rankings, current winner)
-    const publicStageData = (
-      await publicDocument.get()
-    ).data() as RankingStagePublicData;
+    const publicDoc = await publicDocument.get();
+    const publicStageData = publicDoc.data() as
+      | RankingStagePublicData
+      | undefined;
+
+    if (!publicStageData) {
+      console.warn(
+        `Public stage data not found for stage ${stage.id} in cohort ${participant.currentCohortId}. This should have been initialized on cohort creation.`,
+      );
+      return;
+    }
+
     publicStageData.participantAnswerMap[participant.publicId] =
       answer.rankingList;
 
diff --git a/functions/src/stages/survey.utils.ts b/functions/src/stages/survey.utils.ts
index 29eee027f..984e55c74 100644
--- a/functions/src/stages/survey.utils.ts
+++ b/functions/src/stages/survey.utils.ts
@@ -2,6 +2,7 @@ import {
   ParticipantProfileExtended,
   SurveyStageParticipantAnswer,
   SurveyStagePublicData,
+  SurveyStageConfig,
 } from '@deliberation-lab/utils';
 
 import {app} from '../app';
@@ -25,9 +26,18 @@ export async function addParticipantAnswerToSurveyStagePublicData(
       .doc(stage.id);
 
     // Update public stage data (current participant rankings, current winner)
-    const publicStageData = (
-      await publicDocument.get()
-    ).data() as SurveyStagePublicData;
+    const publicDoc = await transaction.get(publicDocument);
+    const publicStageData = publicDoc.data() as
+      | SurveyStagePublicData
+      | undefined;
+
+    if (!publicStageData) {
+      console.warn(
+        `Public stage data not found for stage ${stage.id} in cohort ${participant.currentCohortId}. This should have been initialized on cohort creation.`,
+      );
+      return;
+    }
+
     publicStageData.participantAnswerMap[participant.publicId] =
       answer.answerMap;
 
diff --git a/utils/src/utils/algebraic.utils.ts b/utils/src/utils/algebraic.utils.ts
index be97251f5..381c025c2 100644
--- a/utils/src/utils/algebraic.utils.ts
+++ b/utils/src/utils/algebraic.utils.ts
@@ -194,7 +194,7 @@ export function getRankingCandidatesFromWTL(
  * filter rankings so that they only include those candidates. */
 export function filterRankingsByCandidates(
   participantRankings: Record<string, string[]>,
-  candidateList = [],
+  candidateList: string[] = [],
 ) {
   Object.keys(participantRankings).forEach((id) => {
     participantRankings[id] = participantRankings[id].filter(