The GOP has it; we don't. Not only do Republicans possess extraordinary message discipline, but when the chips are down, even those who stray from the Party's talking points come home to their elephant roost. Folks like Olympia Snowe, Sue Collins, Arlen Specter, Chris Shays et al express "independent" ideas on the Sunday morning talking heads shows only to fall right into line with BushCo when the actual votes are being tallied. (That the media constantly fall for this schtick just goes to show how incredibly dumb or lazy our press is.)
On the other hand, Democrats cannot even seem to agree on the color of the sky. There is absolutely no consequence for people like Brian Baird or other Bush Dogs to abandon the Party (and their constituents). It is simply amazing that Joe Lieberman still has committee assignments (not to mention a chair) from the Democratic Party. If he were a Republican he would have been purged a long time ago.
I wonder whether the leadership is either that impotent or is simply unwilling to play hardball with people who forget that the D after their name means something. Either way it only supports the meme of Democrats as ineffectual and WEAK.