NBCNews.comFirst Thoughts: Obama's post-convention advantageNBCNews.comObama's post-convention advantage in the swing states of FL, OH, and VA… New NBC/WSJ/Marist polls: FL -- Obama 49%, Romney 44%... OH -- Obama 50%, Romney 43%... VA -- Obama 49%, Romney 44%... The debates can't come soon enough for Romney…Poll: Obama leads in Ohio, Fla., Va.USA TODAYNew national numbers in race for White HouseCNN (blog)Sept.