Senior Obama campaign official Steve Hildebrand "is eyeing a Democratic primary challenge to South Dakota Rep. Stephanie Herseth Sandlin, a decision he said hinges largely on whether she votes against health care reform later this week," CNN reports.
Said Hildebrand: "I want to see how she votes on health care. If the vote is very, very close and we lose it or come close to losing it, I will take a seriously look at challenging her."