While Southern Senators tend to be very moderate (read that Bush lite), House members tend to come from polarized districts within states.
All five of the following voted against the Iraq resolution:
David Price, North Carolina
Bennie Thompson, Mississippi (African American)
Ed Pastor, Arizona (Latino)
Sherrod Brown, Ohio
and a personal favorite of mine, Lloyd Doggett, Texas.
You can find each of their House websites here:
http://www.house.gov/house/MemberWWW.html
You can find key votes of theirs here:
http://www.issues2000.org/House.htm