How low can Bush go in the polls?

Judging from this Zogby survey, I'd say 24% and no lower. That's the percentage of people who still rank Bush's trustworthiness at a 4 or 5, on a scale of 1 (low) to 5 (high).

In the poll, low ratings were given to Bush at the same rate as to corporate leaders -- both were rated 1 or 2 by 69% of respondents; Congress got a 1 or 2 rating from 76%. But only 3% of respondents gave Congress a 4 or 5, and only 7% gave corporate leaders one of those high ratings. Bush, by contrast, still has that big group of end-timers, who will apparently love him no matter what he does.

(Via Memeorandum.)