Obama Leading Romney in Four Swing States

GOP nominee yet to persuade voters that he could fix the economy

New polls in four battleground states show President Obamaholding a lead of 5 to 7 points over Republican nominee Mitt Romney, reinforcing the national surveys that indicate that the incumbent gained ground with his convention last week.

Of the four, Obama's largest lead comes in the critical state of Ohio, where he leads Romney 50% to 43% among likely voters, according to the latest NBC/Wall St. Journal/Marist University poll.  The survey also polled likely voters in Florida, where Obama led 49% to 43%, and Virginia, where he led 49% to 44%.