The DMR endorsed Romney four years ago and Santorum ended up winning, not by much but he won. So I guess that can give some hope to Cruz supporters. Anything is bound to happen, especially if the weather is bad.
Actually Romney won on Caucus night. About 4 weeks later after the counting was done he actually had 38 more votes.
In four days of polling, Romney leads at 24 percent, Paul has 22 percent and Rick Santorum, 15 percent.