Wu, an Oregon Democrat, announced on Sunday that he will not seek re-election following allegations of sexual assault. The congressman has been accused of having an "unwanted sexual encounter" with the teenage daughter of a friend last Thanksgiving. Democrats, unwilling to have another sex scandal on their hands, have asked him to resign; however, Wu feels he has done nothing warranting a step-down. House Minority Leader Nancy Pelosi and fellow Democrats have called for an ethics-committee investigation and made it clear that "he has no support." Either way, Wu is out of a job by 2012. How will his losses stack up to other sex scandals? See our rankings, from Tiger Woods to John Edwards.