A starting place? A party that can punish those that stray, like Oly Snowe.
Publicly reject any defections (can you say “cloture vote”?) and say that campaign money is on the line, party support would be withdrawn a the local level.
And carry through to the local level...we’re gunning for YOU Judy Bah Too-pinko!
I agree that we should punish liberal Republicans. Reps. Kirk and Biggert should have conservative primary opponents, in 2010.