That would be an enormous mistake.
Remember that the leftists first had to get rid of Spiro Agnew before deposing Nixon.
Cheney is Dubya's insurance policy.
RATS don't want Cheney to resign. Suppose Bush were to appoint Rice as the new VP? She'd be a shoo-in for 2008.
The RATS and their media handmaidens care only about November 2006 at the moment. The want the House, they want the Senate.