Took the words out of my mouth. Rush was on to something like this too. There are going to be a lot of people who will not vote for a black (yes, racism does still exist), and there are tons of people who will not vote for a woman. Those combined numbers could tank the democrats in Nov.
OTOH, the turnout among those who would vote for someone ONLY b/c of race and ONLY b/c of gender might be large enough to compensate for those who would not vote for one or the other.