In a question playing off Romney's recent criticism of the president's "you didn't build that" remark, over half of respondents said entrepreneurs who start small businesses do the most to create jobs and spark economic growth, versus 22 percent who give large businesses credit, and 13 percent who point to government as the primary economic stimulator.

Nearly three-quarters say small businesses are primarily responsible for the success or failure of their own businesses, and eight in 10 say small-business owners work harder than the typical voter.

Romney also shows a positive favorability rating in the state, a divergence from many national polls. Half of North Carolina voters have a favorable view of the presumptive Republican nominee, while 47 percent view him unfavorably.

President Obama, meanwhile, remains under water with his job performance. While 47 percent of voters in the state approve of the job he's done as president, 51 percent disapprove.

The Rasmussen poll carries a margin of error of plus or minus 4.5 percent.