"Alvin Greene got 80 percent of the Black vote."
Wow. That means 80 percent of blacks will vote for a fake candidate, as long as he is really black.
Just as a thought experiment: how ridiculous would the candidate have to be and how high would the percentage of the vote for the ridiculous candidate among a certain group have to be before you would support taking suffrage away from said group? Surely, some level of ridiculousness and high level of support argues for removal of suffrage? Or are we so far down the road to universal democracy that all opinions are good opinions?