MB has NO chance of making it to the general election.
They are only propping her up to keep Palin out.
If Palin doesn’t run then Romney is the nominee.
I know they would love for Romney to win, but I also don't think they would mind MB winning. Perhaps closer to the primaries they will destroy michele and get their Romney in. Neither candidate can beat Obama. I also think you are correct in that they are using Michele to keep Palin out. If Palin does get in I think it is over for all the candidates. And given the fact Obama and company have not yet been able to destroy Palin, Palin in the race is their worst nightmare.
IMO, the current choice of Rep candidates really stinks.