The problem with this strategy is that the GOP, with Romney at its head, will force moderate Senate candidates on to us. And, if a tea partier does win a Senate primary, they will not assist them in winning against the Democrat incumbent.
In the state of Wisconsin, this will play out. The establishment GOP and Mitt will back Thompson for Senate, even though the Tea Party and conservative groups here see Thompson as a RINO. If Thompson loses the nomination, they will not assist Newmann, Fitzgerald, or Lasee in the general.
Simple alternate strategy is to vote for Obama if Romney is the nominee, thereby preventing him from being the head.
It’s what I plan on doing, although I may change to vote for the constitution party.