Realism, you mean?
Sowwy.
Perhaps Obama - assuming he wins the nomination - will be elected. And perhaps he'll lose, and Americans will have 4 years of President McRomnabee instead.
It just seems odd that a party would choose a candidate that a statistically significant segment of the population would never consider voting for. Kind of puts the party at a disadvantage from the start.
It has been said that in the business world, women and minorities have to work harder/smarter/be more talented than white males to get to the same position. I've seen nothing to suggest that politics doesn't work the same way.