I believe Newt and Rick also believe they need each other at this time. Because of the lag in moving from one to the other, if either dropped out, Romney would be coronated before people could adjust.
I think Santorum (Sanctimonium, as somebody called him here) and Gingrich probably are like oil and water, and Gingrich is much more conservative. Santorum attacked Gingrich first and then rode in on Romney’s coattails after the Romney attack machine sallied forth to do the real dirty work.
So I suspect there’s no love lost there.
I think if Santorum dropped out, most of his voters would go to Romney (several surveys have already said this). To my knowledge, however, they haven’t surveyed what would happen if Paul dropped out. Laugh if you like, but he’s gotten a respectable number of voters in some states, and he would have some delegates to give. And I suspect most of his voters would probably go to Gingrich. So there’s another factor in the equation.
Finally, I think we’re all freaked out because so many states moved their primaries so early that now we think the whole contest is decided. Heck, why not just cancel the convention altogether?
Take care,
-Geoff