What makes you think Gingrich voters would go to Santorum?
I believe most of them would go to Paul or Romney. This because EVERYONE knows Gingrich supporters generally want a candidate that isn't holier than they are. And, certainly, if they valued good Christian principles they would be with Santorum.
Hell, over 2/3 of the GOP electorate who cast ballots in the election so far were under the influence of the devil, surely.
What other explanation could there be?
Polls. They ask that question from time to time. In general, they find that slightly more than half the Santorum voters would go to Romney, while most Gingrich supporters would switch to Santorum.
Remember, I’m not arguing that anybody should drop out. That’s the person who created this thread.
I have pointed out however that in Alaska, Gingrich could have asked some of his caucus supporters to vote for SAntorum, in order to put Santorum above Romney and take delegates.
Huckabee actually did this in West Virginia in 2008, so it’s not some pie-in-the-sky voter thing like most of what people here talk about.