Here is a video ad funded by SEIU that attacks GOP Massachusetts Senate Candidate Scott Brown for being linked to Sarah Palin and "Tea Party Patriots" - which they call an "extremist group." The ad urges voters to choose Democrat Martha Coakley over Brown. Brown is running close to Coakley in a state no one would have believed could possibly be in play, since it is a special election for what Democrats call "Ted Kennedy's Seat." But in a debate with Coakley this week, Brown had would could be a "campaign-turning" moment when he corrected Moderator David Gergen and said,...