Battleground Poll: Tight Races Within Margin of Error

The fight over key swing states remains extremely close, according to a new Purple Strategies poll of likely voters. The data largely confirms findings from USA Today/Gallup last week, which indicated that President Obama has a small edge in several of these states -- but the dynamics are extremely close and fluid. A look at some of the key numbers:

(1) Mitt Romney holds a very narrow one-point lead in Florida, at 48/47. A new Miami Herald poll also shows the race tied, with Romney pulling even on the Medicare...