Bush poll approaching lowest ever Presidential polls

Bush has dropped in the polls again, so that only Truman and Nixon are lower - and not by much.
This is from MSNBC:

2. Do you approve or disapprove of the way George W. Bush is handling his job as president?

Breakdown	Approve	Disapprove	Don't Know
Current Total	26%	65%	9%
Republicans	60%	25%	15%
Democrats	8%	87%	5%
Independents	20%	71%	9%

Trends

Dates	Approve	Disapprove	Don't Know
6/18-19/07	26%	65%	9%
5/2-3/07	28%	64%	8%
3/28-29/07	33%	60%	7%
3/14-15/07	30%	60%	10%
2/28-3/1/07	31%	61%	8%
1/24-25/07	30%	64%	6%
1/17-18/07	31%	62%	7%
12/6-7/06	32%	60%	8%
11/9-10/06	31%	63%	6%
11/2-3/06	35%	56%	9%
10/26-27/06	37%	53%	10%
10/19-20/06	35%	57%	8%
10/5-6/06	33%	59%	8%
8/24-25/06	36%	56%	8%
8/10-11/06	38%	55%	7%
5/11-12/06	35%	59%	6%
3/16-17/06%	36%	58%	6%
11/10-11/05	36%	58%	6%
9/29-30/05	40%	53%	7%
9/8-9/05	38%	55%	7%
8/2-4/05	42%	51%	7%
3/17-18/05	45%	48%	7%
2/3-4/05	50%	42%	8%
12/2-3/04	49%	44%	7%

Nixon got down to 23% just before he resigned, and Truman was at 22% in 1952. My bet is that Bush will continue to drop, and may plumb the depths not previously seen.

That's not is a difficult prediction considering that Bush is the worst American President ever.