36% (American Research Group)

The Chimp in Winter

OK, so I've not heard of ARG before, but I like what they're polling--and just in time for the coming State of the Union:

George W. Bush's overall job approval rating has returned to its lowest point in Bush's presidency as Americans again turn less optimistic about the national economy according to the latest survey from the American Research Group. Among all Americans, 36% approve of the way Bush is handling his job as president and 58% disapprove. When it comes to Bush's handling of the economy, 34% approve and 60% disapprove.

Among Americans registered to vote, 37% approve of the way Bush is handling his job as president and 58% disapprove.
[...]
The results presented here are based on 1,100 completed telephone interviews conducted among a nationwide random sample of adults 18 years and older. The interviews were completed January 19 through 22, 2006.

One note, though--it looks like this poll is a little skewed to the Left:

Among Republicans (33% of adults registered to vote in the survey), 78% approve of the way Bush is handling his job and 17% disapprove. Among Democrats (37% of adults registered to vote in the survey), 11% approve and 83% disapprove of the way Bush is handling his job. Among Independents (30% of adults registered to vote in the survey), 24% approve and 71% disapprove of the way Bush is handling his job as president.