NBC News reports on the latest NBC/Marist polls:
In Florida and Virginia, Obama leads Romney by an identical four-point margin, 48 percent to 44 percent, among registered voters, including those who are undecided but leaning toward a particular candidate.
In Ohio, the president is ahead by six points, 48 percent to 42 percent.
In March NBC-Marist polls — conducted during the middle of the GOP primary season — Obama led Romney by 12 points in Ohio (50 percent to 38 percent), and by a whopping 17 points in Virginia (52 percent to 35 percent). In January, Obama was ahead of Romney by eight points (49 percent to 41 percent).