[mvpel]

...But some of those delegates were never really “his.” ABC estimates that 78 Santorum delegates, from his wins in states that don’t “award” their delegates – Iowa, Colorado, Minnesota, and North Dakota, would have been free to support any candidate at the Republican National Convention in Tampa...

Funny, they never mention this fact when discussing how many delegates Romney "has."

[Taiowa]

I think that’s because Mitt didn’t typically win caucuses, only primaries. The caucus delegates tend to be non-committed, so unfortunately for Rick, that was one of his problems.