diff --git a/app/models/vote.rb b/app/models/vote.rb
index ad42945..81eb208 100644
--- a/app/models/vote.rb
+++ b/app/models/vote.rb
@@ -18,6 +18,8 @@ class Vote < ActiveRecord::Base
   named_scope :with_voter_ids, lambda { |*args| {:conditions => {:voter_id=> args.first }} }
   named_scope :active, :include => :choice, :conditions => { 'choices.active' => true }
 
+  serialize :tracking
+
   after_create :update_winner_choice, :update_loser_choice
 
   def update_winner_choice
--
libgit2 0.21.2