Many Republicans, if you listened to the Sunday Chatter, tried their hardest to denounce or distance themselves from the rhetoric of Rush Limbaugh.
Limbaugh was the closing speaker at CPAC this weekend. He was supposed to speak for 20 minutes but went on for over a hour. The movement of many Republicans to move against Limbaugh is quite simple, polling numbers. The Republican Party is being viewed as not wanting to work with Barack Obama, being shown to be the party of NO, and is being framed as following the rhetoric of Rush Limbaugh. You can view Rush Limbaugh's speech to CPAC here.
RNC Chair, Michael Steele on D.L. Hughley
Congressman Eric Cantor, Minority Whip on This Week