The Cook Political Report rates each state's leaning in the Electoral College based upon a canvas of at least four top strategists for each party. As of October 21, Oregon was rated Leans Kerry.
Cook's U.S. electoral map

BUSH/CHENEY
2 Bush visits since March 3

Oct. 14 - BUSH: Rally, Central Point
Sept. 17 - CHENEY: Town hall, Oregon City; Rally, Eugene
Sept. 3 - CHENEY: Rally, Pendleton

KERRY/EDWARDS
3 Kerry visits since March 3

Oct. 13 - EDWARDS: Rallies, Medford, Eugene, and Portland
Aug. 12-13 - KERRY: Rallies, Central Point, Portland; Front porch, Eugene