It appears that a slight majority of those polled do believe that Saddam was personally involved in the 9/11 attacks
CNN/USA Today/Gallup Poll. Latest: March 14-15, 2003. N=1,007 adults nationwide. MoE ± 3 (total sample).
"Do you think Saddam Hussein is involved in supporting terrorist groups that have plans to attack the United States, or not?" Form A (N=488, MoE ± 5)
Yes No No Opinion 3/03 88 9 3 8/02 86 8 6
.
"Do you think Saddam Hussein was personally involved in the September 11th terrorist attacks, or not?" Form B (N=519, MoE ± 5)
Yes No No Opinion
3/03 51 41 8
8/02 53 34 13
The numbers are a little below an outright majority here:
CBS News/New York Times Poll. Latest: March 7-9, 2003. N=1,010 adults nationwide. MoE ± 3 (total sample).
"Do you think Saddam Hussein was personally involved in the September 11th, 2001, terrorist attacks against the World Trade Center and the Pentagon?"
Yes No Don't Know
3/7-9/03 45 40 15
(These and many more are available at The Polling Report http://www.pollingreport.com/ )