Clarification: I'm not happy with any of the candidates, but at this point I'm probably going to vote for Rick Santorum. I don't really have much choice in the primary since Gingrich didn't get his name on the Missouri primary ballot, and the race will probably be over by the time the Missouri caucuses are held.
But yes, I probably could vote for Newt Gingrich and if things go the way they seem to be going, he may end up being the best remaining choice to stop Romney.
As I said Rick Santorum must not get into attacking the other candidates as his mantra, instead he needs to attack the Obamanites and show how he will defeat them, or his campaign will have no traction left.