President Barack Obama is clinging to his lead in the all-important state of Ohio in a polls released Wednesday by Time magazine and a survey firm.

Counting Ohioans who say they will go to the polls on Nov. 6 as well as those who have already voted early, Obama holds a 49 to 44 percent lead over Mitt Romney in a survey taken by Time Monday and Tuesday night. The poll’s margin of error is plus or minus three percentage points, Time said.

“The poll makes clear that there are really two races under way in Ohio,” the magazine said. Among Ohioans who have not yet voted but who say they will, the candidates are tied 45 percent. But with those who have voted since Oct. 2, when early voting began, Obama crushes Romney by 60 to 30.

The Time survey finds a huge gender gap: 56 to 37 percent for Obama among women and 51 to 42 for Romney among men. While Romney is winning 49 percent of whites, Obama is still attracting 43 percent, a much higher level than in many other states.

Another poll of Ohio out Wednesday, by the Democratic-allied Lake Research firm, has Obama leading Romney 46 to 44 percent, with 9 percent undecided.

In Nevada, a Public Policy Polling survey had Obama leading 51 to 47 percent.

In national tracking polls released Wednesday, Romney led by 49 to 48 percent in the ABC News/Washington Post and 50 to 47 in Gallup. Obama led 47.3 to 44.3 percent in the Investors Business Daily/TIPP poll, Public Policy Polling had a tie at 48 percent and UPI had Obama up 49 to 47.

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