We also have the youth vote, the Hispanic vote, the women vote, and everyone turned off by Jeb Bush, Donald Trump and Scott Walker. That doesn't leave you with anyone but old white men and between now and November 2016 about 600,000 will have died off. But hey, keep the faith.
The "Youth "don't vote, especially for some boring old white *****.
"Hispanics" are concentrated in states that are not up for grabs.
"Women" are not some monolithic group that check with their vaginas before deciding on a candidate.
PS- every Democrat candidate is OLD and WHITE.