For more than thirty years, exit polls accurately predicted election results. Over the last ten years that reliability has disappeared. What's going on? The last two presidential elections both came down to a relatively small number of votes, and in both elections the integrity of the voting process has been called into question. With the upcoming election looking to be similarly close, the time has come to ask the questions: What happened in 2000 and 2004? What, if anything, has changed since?