With Sen. Orrin Hatch appearing to pass a first crucial political test on Thursday night when his supporters swelled attendance at GOP caucus meetings in his state to record numbers, the inundation of outside money in the Utah Senate race may only pick up steam. Super PACs have played a bigger role in the multi-stage contest that will decide the 36-year Senate veteran's fate than any other 2012 congressional contest so far. And that's not even counting the money spent by a nonprofit group spending hundreds of thousands of dollars supporting Senator Hatch.

At least six outside interest ...