I firmly believe that, to some extent, the last election was rigged. I also know a lot of other, more normal, people that believe this but don't want to mention it to others for fear of being labeled a consipracy theorist and getting their complimentary tinfoil hat in their P.O. Box. There's an article [slashdot.org] out detailing how a programmer built a vote-rigging demo software package for a Florida politician. Unfortunately, the story is half baked, and very short on details. If you want to read the people who are really investigating and trying to prove the vote-rigging, go over to Black Box Voting [blackboxvoting.org, and that .org is important]. They discuss the article, too.
Even better, go to the Open Voting Consortium [openvotingconsortium.org]. I think that's the solution. The hard part is going to develop the software and manage to get Diebold and the rest out of the game. Closed source has no business in our elections. Nor does profit. All companies making voting machines should be non-profit. Of course, this all is going to upset the powers that bNO CARRIER