Talk to me in November. In either case, we've become at present, a de facto single party nation, with no room for conservatives. Conservatives right now face a choice, whether to work "within" the Republican party and try to win it back as their home (IMHO, a futile effort), or band together and form their own party.
Conservatives who choose to stay in the party in congress and at the state and local levels will only continue to be marginalized...at a slower pace if a Dem wins the presidency, but eventually nonetheless.
I'll tell ya now. With McCain, the Republicans will be beat like a drum in November.