Illinois Lt. Gov. Pat Quinn said Sunday that he expects Gov. Rod Blagojevich to be impeached by the Illinois House and convicted by the state Senate, clearing the way for a special election in June to fill the U.S. Senate seat vacated by President-elect Barack Obama.

Mr. Quinn, speaking on CBS News's "Face the Nation," said he hopes Mr. Blagojevich will be out of office by Feb. 12, when the state will celebrate the bicentennial birthday of Abraham Lincoln. The lieutenant governor added that he hopes Mr. Blagojevich will voluntarily...