In a video posted on YouTube, former Barack Obama campaign manager David Plouffe challenges Obama's supporters to beat Sarah Palin at book selling for one day. It's a one-day contest designed to test whether Sarah Palin can still rally the Democratic base. Plouffe promises to devote $1 from each book he sells to charity.
Marc Ambinder is an Atlantic contributing editor. He is also a senior contributor at Defense One, a contributing editor at GQ, and a regular contributor at The Week.