Oh, there's no doubt Democrats in general are better on the issue. Although, of course, we have our share of turncoats as well.
Lindsey Graham has been very good on trade for the most part, though, so props to him. (I also like him for voting for the anti-pork Coburn amendment.)
It's a little confusing because they just replaced Corzine with Menendez, but anyways, 10 Senators weren't ranked, and the worst Democrats are Ben Nelson and Conrad (dumb Alito supporters) with a 50. 27 Republicans do worse than them. Inouye has a 66.67. With an 83.33 or better are 38 Democrats, Jeffords, and 5 Republicans.