Gallup poll: President Obama leads Romney in swing states

In the first Gallup Swing States Poll since Romney became the presumptive GOP nominee, President Obama leads Romney 47%-45%.

Romney also seems to lag in the enthusiasm department: among who see themselves as "very" or "extremely" enthusiastic for their candidate, President Obama leads Romney 55%-46%.

The enthusiasm gap could be significant on election day in terms of "getting out the vote."

We'll see...