diff --git a/src/components/ChainDataSections.tsx b/src/components/ChainDataSections.tsx
index ea9b2d0..f844aa5 100644
--- a/src/components/ChainDataSections.tsx
+++ b/src/components/ChainDataSections.tsx
@@ -5,6 +5,7 @@ import type {
   SuiChainData,
   CosmosChainData,
   EthereumChainData,
+  PolkadotChainData,
 } from '@/types/api';
 
 // --- Styles (matching ValidatorProfile patterns) ---
@@ -699,6 +700,38 @@ function EthereumChainSections({
   );
 }
 
+function PolkadotChainSections({
+  data,
+  isMobile,
+}: {
+  data: PolkadotChainData;
+  isMobile: boolean;
+}) {
+  // Replaces the demoted dot_not_elected feed event. Badge renders
+  // only when the worker has populated chain_data.is_elected — during
+  // the deploy gap window where worker is_elected hasn't reached prod
+  // yet, undefined would render falsy and incorrectly show "No". Better
+  // to render nothing than to show wrong data.
+  if (typeof data.is_elected !== 'boolean') {
+    return null;
+  }
+  return (
+    <Section title="Active Set" isMobile={isMobile}>
+      <Field
+        label="Currently Elected"
+        value={
+          <span style={{ color: data.is_elected ? 'var(--color-accent)' : 'var(--color-danger)' }}>
+            {data.is_elected ? 'Yes' : 'No'}
+          </span>
+        }
+      />
+      {data.observed_at_block != null && (
+        <Field label="Observed at Block" value={formatNumber(data.observed_at_block)} />
+      )}
+    </Section>
+  );
+}
+
 // --- Main export ---
 
 interface ChainDataSectionsProps {
@@ -721,6 +754,8 @@ export function ChainDataSections({ chainData, isMobile }: ChainDataSectionsProp
       return (
         <EthereumChainSections data={cd as unknown as EthereumChainData} computed={computed} isMobile={isMobile} />
       );
+    case 'polkadot':
+      return <PolkadotChainSections data={cd as unknown as PolkadotChainData} isMobile={isMobile} />;
     default:
       return null;
   }
diff --git a/src/types/api.ts b/src/types/api.ts
index cf30689..379be55 100644
--- a/src/types/api.ts
+++ b/src/types/api.ts
@@ -478,6 +478,11 @@ export interface EthereumChainData {
   slashed: boolean;
 }
 
+export interface PolkadotChainData {
+  is_elected: boolean;
+  observed_at_block: number;
+}
+
 // --- Scan Analysis ---
 
 export interface ScanAnalysisSummary {