Barack Obama 51
John McCain 44
Sarah Palin's popularity with Colorado voters over the last couple weeks has plummeted, and as it has Barack Obama has opened up his biggest lead yet in a PPP survey of the state.
Immediately after the Republican convention 41% of Coloradoans said John McCain's choice of Palin to join him on the ticket made them more likely to vote for him while 38% said it made them less likely to do so. Now the number of people saying Palin's selection makes them less likely to vote for McCain has climbed to 47% with the number of people viewing it favorably dropping to 38%.
The movement over the last couple weeks has been particularly acute with independent voters. 56% of them say that the Palin choice makes them less likely to support McCain and what was a 49-38 lead for Obama with that group is now a 58-31 advantage.
Obama's margin with Hispanics is pretty steady since the previous poll, but he has improved from a six point deficit to a one point lead with white voters.
Full results here.