I hope this thing loses--for stupidity. Who you vote for does not change your race or ethnicity. Insinuating that it does is an insult to whatever intelligence they may have. Unless they are really stupid (and that comes mostly from a lousy education system, too much weed, or both), they are not exactly going to be flattered by a statement such as "If you vote for my opponent, you are not black". Imagine what would happen if a candidate made the same statement for whites--I bet that would be the end of that candidate's run, forever.
If it was up to me, such a stunt would be the end of this incompetent idiot's candidacy. And is this thing even qualified? Last I knew, you need to be in good enough health to function in society to qualify as president. And this level of retardation that Biden is displaying is not good enough. I would rather have someone with a common heart problem, is too fat but not so fat that it is preventing him from doing his job, and high blood pressure than someone that can't even do his own thinking and that continually makes "mistakes" of this magnitude while trying to court voters of specific demographics.
Besides that, wouldn't it be better to concentrate on getting votes, regardless of demographics? Last I knew, so long as they come from citizens or those legally permitted to vote, a black vote does exactly the same as a white vote or a Hispanic vote. Exactly the same. And, since it is the totals that matter and not how they are split up, he should be focused on all votes, not just specific demographics. But, then again if this guy is that stupid, he will not think of that.