So as a Santorum voter you can vote for Romney, it is contaminating the ticket with Gingrich, which may be the problem?
No, I doubt I could hold my nose tight enough to vote for Romney under any circumstances, but if either Newt or Rick, stayed in the race past any rational hope of actually winning the nomination, and siphoned off just enough conservative votes, to ensure that the RINO Romney was the eventual nominee, then no, I would never vote for a ticket consisting of both a RINO, and a RINO enabler.