I don't know about Levin, Laura is independent, but Rush & Sean were big-time water catteries. Rush even said after the 2006 election that he was going to stop carrying water for those Republicans that didn't deserve it.... meaning he had.
If Rush didn't carry water for the GOP, perhaps they would have gotten their act together and more conservatives would have went out to the polls.
I know Laura has been against Bush on the Ports deal (which I wasn’t again if you check my FR history), Harriet Myers, Amnesty and other things I can’t remember.
Laura and Savage are my daily must-listen to radio shows.