A McCain Leader In Michigan Switches To Thompson

One of the earliest Michigan politicians to formally endorse Sen. John McCain has defected to Fred Thompson.

Chris Ward, the House minority floor leader, told colleagues yesterday that he'd made the switch.

In Feb., Ward formally endorsed McCain and was asked to sit on his statewide steering committee.

Republicans in Michigan say that Thompson volunteers are calling every elected official and activist -- even those who have endorsed other candidates -- and urging them to support what they call the race's only true "electable conservative."

A few days ago, a key county chairman in South Carolina cited immigration in withdrawing his endorsement of McCain.