Fixed recommendation delete support

votes/models.py

@@ -63,11 +63,12 @@ class MemopolVote(Vote):
 
     @cached_property
     def absolute_score(self):
-        if not self.proposal.recommendation_id:
+        try:
+            recommendation = self.proposal.recommendation
+        except models.ObjectDoesNotExist:
+            # Recommendation was deleted
             return 0
 
-        recommendation = self.proposal.recommendation
-
         weight = recommendation.weight
         if (self.position == 'abstain' or
                 recommendation.recommendation == 'abstain'):