The Elon University Poll released Monday finds 47 percent of likely voters said they planned to vote for Romney compared to 43 percent backing Obama. That's more than the margin of error of plus or minus 3 percent.
The telephone survey of nearly 1,100 likely voters was conducted over six days ending with Thursday, when Romney gave his acceptance speech at the Republican National Convention. The poll's organizers say public attention of the convention gave Romney a small bump in support in the state.
The poll found nearly half of sampled voters say the economy remains the most important issue.
Meanwhile, in a new survey by the Liberal-leaning Public Policy Polling, the race is a dead heat with both candidates receiving 48 percent of support from potential voters.
There's also good news for Romney in the PPP poll. His favorable rating jumped five points since last month.