The polling results are reported on http://www.pollingreport.com/trade.htm
Los Angeles Times/Bloomberg Poll. May 1-8, 2008. N=2,208 adults nationwide. MoE ± 3.
"Generally speaking, do you believe that free international trade has helped or hurt the economy, or hasn't it made a difference to the economy one way or the other?"
In November 2007, 44 percent though trade was hurting and 27 percent thought it was helping. In May 2008, 50 percent though trade was hurting and 26 percent thought it was helping.