This article explains just exactly how Republican operatives stole the 2004 election:
Robert Kennedy explains how Republican operatives stole the election by shredding democrats' voter registration forms, refusing to provide ballots to voters in Democratic strongholds, illegally failing to count ballots from pro-Kerry precincts, and rigging computerized voting machines.

Remember how the exit polls showed Kerry way ahead on election day, and then Bush inexplicably won? It was stolen, my friends. Stolen.