That’s the point! Dems can not win on minorites alone, they basically have to win with a solid number of whites and high number of minorities. Well the thing is that those number of whites (middle class working family) are abandoning the dems more and more and the numbers are making it hard for Dems. Obama could get a high rate of minorities, especially blacks to vote for him and Dems on the ballot but ‘no Obama’ in mid-terms and coming 2016 presidential election means that its very unlikely that the Dems are going to get that same high amount of minorities to cover for losing white democrat voters.
2016 is ripe for an conservative to channel similarly to what Reagan was doing by going after those ‘Reagan Democrats’ middle-class families back in those days. With the bad economy and malaise going around I think a conservative could increase turnout but you can’t do that with a RINO like Christie or Jeb or some other
It will be very hard for a white Democrat to replicate what Obama did simply because blacks are racist voters - they voted for Obama in exceptionally high numbers out of racial solidarity. That’s why he was able to win the White House twice with a minority of the white vote.
Black turnout won’t be as high in 2016 and Hillary - or any other white Democrat has to face the fact if black turnout is going to decline and the Democratic share of the white vote remains the same - that Democrat is going to lose a national election. And if the Democrats don’t address their white male problem, they’ll be looking back nostalgically on the Obama decade.