[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/05/14/art.obama.5.14.jpg caption="Barack Obama is ahead in Oregon polls."]
(CNN) - A day after suffering his second-worst defeat of the primary season, a new poll shows Barack Obama is headed for a big win in Oregon next Tuesday.
According to a new poll from the Portland Tribune and KPTV, the Illinois Democrat holds a 20 point lead over Clinton there, 55 percent to 35 percent. Ten percent of voters remain unsure.
The poll was conducted May 8-10, entirely before Clinton's blowout win in West Virginia Tuesday night. There, Clinton beat Obama by 40 points, her second widest margin of victory all year. But Oregon promises to be more favorable for Obama, given its broader swath of liberal and college educated Democrats.
Kentucky, a state with similar demographics to West Virginia, also votes next Tuesday and is expected to hand Clinton another big win.
Both Oregon and Kentucky are bigger prizes in terms of delegates than West Virginia. Fifty-two delegates are up for grabs in Oregon and 51 are on the line in Kentucky. Only 28 delegates were awarded in West Virginia.
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