A Romney, with a likely more conservative (by necessity) VP and more conservatives in congress can be moved toward the center/right...maybe not too very much, but way, way, more than the current Bozo-in-charge.
OK, the tongue in cheek part is "conservatives" as used above...so I'll modify that to "not-so-much-RINOs"
You/we, aren't going to change the world this year. We are certainly not going to change the world for the better if we sit home in a snit because our guy (or our former governor) didn't get the call.
What you/we need to do is (are)
a. Drop the one-cause-fits-all demands.
b. Actually work for any and all likely (or more similar to) conservative candidates - at any level.
c. And make it clear to the candidates and office holders that "tea party" isn't limited to a bus tour of the USA.