Everyone knows that Rich and Rudy have an end game pact. Rich most likely knows that if he breaks this agreement He might lose Rudy's vote and it would definately make him look bad in front of the jury. Sue and Kelly would both want Rich in the final vote because Rich is not the most liked. Therefore, assuming Kelly wins immunity, Rich and Rudy will vote for Sue. Kelly and Sue will vote for Rudy because he is a threat for the final vote. That is where the infamous tie would happen. Rich could change his vote to Rudy and break the pact but Rudy would never really know what happened. The vote is in confidence and Rich will automatically look alot better if he is "forced" to vote out Rudy.Now I know a lot of people that want Rudy to win will call this therory impossible but, like it or not, it is past the point where anyone wants to vote rich off. Sue, Kelly and Rudy will all want to go against him for the final vote. We also have Sue saying that her, Kelly, and Rich would be the final three(episode 9, I think). Meaning, that she would vote Rudy off before Rich.