I was thinking this morning about the circular firing squad that will form if Romney gets the nomination but loses to Obama in November. Conservative Republicans will blame the moderates for another McCain/Dole candidate that many feel are too much like the Democrats to form a real contrast. Moderate Republicans will blame Santorum and Gingrich for forcing the nominee too far afield of mainstream electability. Many will blame Gingrich (be they pro-Romney or pro-Santorum) and Newt of course will blame the candidate himself for lacking "true conservative principles" (as he defines it). The "anyone but Obama" Republcians will blame the whole lot on being ineffective.
Of course, winning solves a lot of problems. But the longer the fratricide goes on, the harder it's gonna be.