ABC News/WaPo Iowa poll

Obama 30, Hillary 26, Edwards 22. Their only previous poll, back in July also gave Obama a lead, albeit a smaller one (27% for Obama compared to 26% for Hillary and Edwards). The poll offers some evidence to support David Yepsen's point that Edwards' recent decline could help Obama. However, the improved result for Obama is most likely due to the fact that the polling took place Nov. 14-18, meaning two days of polling were concluded before the most recent debate aired at a time when Obama was getting quite a bit of positive press due to his Jefferson-Jackson Day speech. We'll have to wait and see whether any polls out later this week confirm ABC's results.