Rep. Joe Sestak justifies his taking time off from doing his job.

In response to recent criticism that he had missed more than 100 votes this session, Sestak said most of those were procedural and noted then-Sens. Barack Obama and Hillary Clinton likely missed many a vote during their campaigns last year, but did so with the belief that they were sacrificing those votes for a greater purpose.

Yes, his personal ambition to greater political power.