I cannot imagine a scenario where Romney could win.
Why? The economy sucks, the nation is in the toiletm scandals, etc.
Obama won by 5 points in 2008, not 15. he is not as popular as he was in 2008 and the thrill is gone. He will have turnout problems.
If we can keep ourselves from massive infighting, Romney will get at least the McCain % and hopefully pick up an additional 3-5% and win in november and send the obamunist home to wherever the heck he came from.
That's ok because all we need is a majority of voters who can imagine a scenario where Romney could win.