PPP's first national poll of 2012 finds Barack Obama with his best standing against Mitt Romney since last May, right after the killing of Osama bin Laden. Obama leads Romney 49-44. It's not as if Obama's suddenly become popular. He remains under water with 47% of voters approving of him to 50% who disapprove. Romney's even less popular, with only 35% rating him favorably while 53% have a negative opinion of him. Over the last month Romney's seen his negatives with independents rise from 46% to 54%, suggesting that the things he has to say and do to win the...