Speculation on Cheney's resignation

I'm late on this, but here is Insight magazine on Feb. 27:

Senior GOP sources envision the retirement of Mr. Cheney in 2007, months after the congressional elections. The sources said Mr. Cheney would be persuaded to step down....

I think Cheney should serve out his term, but his resignation would certainly give Bush a chance to anoint the favorite for the 2008 GOP nomination.