Here's Rasmussen's polls from 2-3 weeks before the election:
Montana 10/19: Tester 48% Burns 45%
Rhode Island 10/22: Whitehouse 52% Chafee 44%
Tennessee 10/23: Corker 47% Ford 46%
Virginia 10/24: Allen 50% Webb 48%
Missouri 10/25: Talent 50% McCaskill 48%
Maryland 10/26: Cardin 50% Steele 45%