That is exactly how we got stuck with Jack Kennedy, Dick Nixon, Jerry Ford, Jimmy Carter, Bush Sr., Bush Jr., and the Wee Wee.
If the Pubs nominate Mittens, then I will seek a suitable third party candidate, and if none presents, I simply will not vote.
If that results in the reelection of the Wee Wee, then we will see our nation's decline completed sooner rather than later with clearer linkage to liberalism than ever.
Under no circumstances will I ever stand before my Maker and explain that I supported a cultist, death panel, pagan, baby-killer because he was the lesser of two evils.