03/28/2008 02:43 am ET Updated May 25, 2011

Running For Cover: Bush, Frist, Hastert, House Maj. Leader Blunt, Former Leader DeLay...

As politicians led by President Bush scrambled to ditch campaign contributions from disgraced lobbyist Jack Abramoff, former House Speaker Newt Gingrich cautioned Republicans they risk losing control of congressional majorities if they try to put all the blame on lobbyists.

"You can't have a corrupt lobbyist unless you have a corrupt member (of Congress) or a corrupt staff. This was a team effort," Gingrich told a Rotary Club lunch in Washington on Wednesday. He called for systematic changes to reduce the enormous financial advantages that incumbents have in congressional elections.

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