https://en.wikipedia.org/wiki/2000_United_States_presidentia...
> About 19,000 ballots were spoiled because of overvotes (two votes in the same race), compared to 3000 in 1996.[18]:215–221 According to a 2001 study in the American Political Science Review, the voting errors caused by the butterfly ballot cost Gore the election: "Had PBC used a ballot format in the presidential race that did not lead to systematic biased voting errors, our findings suggest that, other things equal, Al Gore would have won a majority of the officially certified votes in Florida."
And yet the protests then were level-headed, largely peaceful, and fully justifiable.
I don't think this election was stolen, but in 2004, I did think there were oddities which were swept under the rug.