"Which brings me to the remedy sought a few years back when Californians got tired of their governor, Gray Davis. Under state law, they were able to mount a recall effort that took away his job. To set up a simular federal mechanism, a constitutional amendment would seem necessary, and that could not happen overnight. Still, with impeachment losing credibility as a constitutiional remedy, the possibilility of having an "incompetent" president with a 35% job approval rating in office for almost three more years represents enough of a threat to an unhappy and beleaguered United States that a wide-ranging debate is in order."
-from The Huffington Post.