diff --git a/app/models/community.rb b/app/models/community.rb
index c9dd0ddfb..fb3e5dc7c 100644
--- a/app/models/community.rb
+++ b/app/models/community.rb
@@ -6,6 +6,7 @@ class Community < ActiveRecord::Base
   def participants
     users_participants = users_who_commented +
                          users_who_topics_author +
+                         response_author_from_polls_for_proposal +
                          author_from_community
     users_participants.uniq
   end
@@ -31,4 +32,13 @@ class Community < ActiveRecord::Base
     from_proposal? ? User.where(id: proposal&.author_id) : User.where(id: investment&.author_id)
   end
 
+  def response_author_from_polls_for_proposal
+    author_ids = []
+
+    Poll.where(related: proposal).each do |poll|
+      author_ids += poll.questions.pluck(:author_id)
+    end
+    
+    User.by_authors(author_ids.uniq)
+  end
 end