With days still to go in the White House race, backers of vice presidential candidate Sarah Palin are talking her up as a possible contender in 2012, speculation that irritates other Republicans who contend she's a drag on the ticket and that her lightweight image — unfair or not — will be hard to shed. The Alaska governor has done little to quiet the talk. In fact, she fueled the discussion this week when she signaled that she will remain on the national political scene no matter what happens Tuesday. "I'm not doing this for naught," she said in an...