What's the Difference Between a "Moderate" Democrat and a "Moderate" Republican?

A moderate Republican will buck the party, but on the close votes about an important issue, will vote with the Republicans.

A moderate Democrat will buck the party, but on the close votes about an important issue, will vote with the Republicans.

So, I see the fact that Olympia Snowe is joining Joe Lieberman and Ben Nelson in retiring from the Senate as an unalloyed good:

Citing excessive partisanship and a dispiriting political environment, Senator Olympia J. Snowe, a three-term Republican from Maine, said Tuesday that she would not run for re-election in November. Her surprise decision delivered a potential blow to Republicans who need just a handful of seats to regain control of the Senate; Ms. Snowe was considered one of their safer incumbents.

“After 33 years in the Congress this was not an easy decision,” said Ms. Snowe, 65, a moderate who served 16 years in the House before moving to the Senate. “My husband and I are in good health. We have laid an exceptionally strong foundation for the campaign, and I have no doubt I would have won re-election.”

Her entire statement sounds like a hissy fit, so maybe it's a fit of pique.

The lateness of her announcement, it's almost March , does jam up the Republicans, particularly since Maine is really not fertile ground for the Teabagger types, particularly after their close exposure to flying monkey right wing nut job, and current governor, Paul LePage, and moderate Republicans have to deal with Grover Norquist and the Club for Growth.