Last night in Charlotte, President Barack Obama made his plea for a second term with a tone of humility. “I’m no longer just a candidate. I’m the President.” The speech lacked the soaring rhetoric of candidate Obama in 2008. Instead, it was grounded in the prose of reality – what’s been accomplished, what remains to be done. Nor did Obama match the impassioned, folksy delivery of Bill Clinton from the night before, but he did paint a definitive choice for voters, outlining the stark differences between the Democrats and the Republicans. Did he manage to persuade those important swing voters to give him more time?