Ajout page statistiques

src/lib/services.ts

@@ -242,6 +242,16 @@ export const voteService = {
     if (error) throw error;
   },
 
+  async getByCampaign(campaignId: string): Promise<Vote[]> {
+    const { data, error } = await supabase
+      .from('votes')
+      .select('*')
+      .eq('campaign_id', campaignId);
+    
+    if (error) throw error;
+    return data || [];
+  },
+
   async getParticipantVoteStatus(campaignId: string): Promise<ParticipantWithVoteStatus[]> {
     const { data: participants, error: participantsError } = await supabase
       .from('participants')