once a democrat, he jumped to the g.o.p. four decades ago. spector one of the only three republicans to vote for the trillion-dollar stimulus. when polls showed him losing the 2010 primary to pat toumey, spector switched back to democrats. now, he faces a democratic challenge from representative who once trailed spector by 20 points in the polls. not anymore. >> your senator, just been doing outstanding work in the senate, arlen specter is in the house. >> march 8, a health care rally in philadelphia. president obama gives a shout out to two democrats fighting for the same job. >> someone rendered outstanding service to our nation,. >> he claims the obama administration tried to entice him to leave the race with