Republican Militarism/borders usually scares me, so I vote for a mixed government. If Romney wins the nomination I would definitely think about voting for a Democratic House of Representatives. Something like that.
One thing to say Obama will lose, and some people are sticking to those guns, but who is going to beat him? Right now it looks like the challenger is Romney, who has tepid support from his own party let alone people that voted for O in 08. Even the conservatives on this site, the rugged individualists and bootstrappers they are, seem inclined to vote for write-ins, and don't really identify with him (at all).
I think that Obama is likely to win, even though I think he's been a lousy President. Romney might get his act together--he's the only GOP candidate in the race that can beat BHO--but I don't find it likely that he will. Ed O.