With 55 days to go and the latest polls showing the presidential showdown deadlocked in a tie, sounds of worry is emanating from the left about the impact of McCain runningmate Sarah Palin. But if Democratic nominee Barack Obama is worried, he’s got a great poker face. Speaking at a press briefing this afternoon in Ohio, Obama addressed the Washington Post/ABC poll which showed white women jumping over to the McCain-Palin ticket in droves. Polls, schmolls “These are the same polls that had me 20 down last summer that have swung wildly thought this process,” he said. “I think that...