Speaking as a Newtorum supporter, I think Newt is right and would like him to stay in. He’s correct to observe that not every Newt vote will go to Rick.
If ever Newt voter did not go to Santorum, then they are hypocrits.
This is one of those no-brainers that frequently gets overlooked, only to yield a "duh" response after reality plays out--if those Newt votes were at all interested in voting for Santorum, they'd already be Santorum votes. There are good reasons why they are not, and why many won't ever be.