. . . I did not compile composite exit polls by race / ethnicity (I will do so at a later time). However, to this entire question I simply say "so [effing] what?" Does the vote of a white low income Democrat count different than the vote of a black low-income Democrat? Are white low income Democrats voting along racial and ethnic lines anymore than African-American Democrats?
This is an ostrich attitude. It is well established that African Americans have been voting for white Democrats for decades in numbers up to 90%. White Americans have not, especially white men. This is very much an issue for the general election. Indeed, it is one of the reasons why I believe Barack Obama is more electable than Hillary Clinton. Let us not shy away from this difficult question.
Barack Obama has run best, of course with African Americans. And no one can doubt that should Obama be the nominee, African American turnout will break all previous records, and likely by significant margins. This is very important and to Obama's credit as a general election candidate. But will it be enough to win Ohio, Pennsylvania, Michigan and Florida in a general election? Or will Obama's vulnerability with working class white men and with white women and seniors more than offset this? Can McCain poach enough Clinton demographics to beat Obama in November? Perhaps white women and working class white men and seniors will come home to an Obama candidacy in November.
And for all the talk of how Obama will help Democrats in the West, one has to wonder what his weakness among Latino voters portends.
Hillary Clinton has demonstrated incredible weakness among white men (I choose to view the support among African Americans as a vote for Obama, not a vote against Clinton). More so than is typical for Democratic candidates. But this may be mitigated by the groups she has been losing. Young white men and wealthier, college educated white men. Perhaps she can win them in November.
What does all this mean? I stand by my view that both candidates have strong and committed constituencies. The Media and the Left blogs are dedicated to their mission of ridiculing Hillary so they do not see what is obvious (and frankly surprising to me), Hillary's supporters REALLY like her. They do not like how she has been treated. If Obama is the candidate, he may need to pick Hillary as his running mate.
I have long believed Hillary would have no choice but to put Obama on her ticket. I think the reverse may also be true.