The polls have closed in Ohio, and the race is too close to call there. One reason may be voters’ concerns about the economy. More than half of Ohio voters said that the economy is the most important issue facing the country, NBC News exit poll results show.

President Obama carried Ohio in both 2008 and 2012, but this year Donald Trump has a good chance of turning the Buckeye State red — or perhaps scarlet, if you ask folks in Columbus.

Clinton is leading Trump in our national exit poll among voters who said the economy is the most important issue, but that’s not the case in Ohio. Trump appears to have convinced many Ohioans that he is the stronger candidate on this critical issue. When asked who would better handle the economy, 49 percent of Ohio voters said Trump, 45 percent said Clinton.

Trade policy was at the core of Trump’s economic pitch to voters, especially those living in the upper Midwest. His protectionist views on this issue resonated with voters in Ohio. Fully 47 percent of Ohio voters say that trade with other countries takes away U.S. jobs, compared to about a third who say it creates more jobs and 14 percent who say it has no effect.

And not surprisingly, Trump is doing very well with those who say trade takes away U.S. jobs – he wins those voters by about a two to one margin.

Demographically, these attitudes are translating into white working class voters breaking more decisively for Trump than than they did for Mitt Romney. In 2012 Romney won non-college whites in Ohio by 14 points. Tonight Trump is winning them by 21 points.

And take a look at voters in union households. This traditional piece of the Democratic coalition, are going for Trump in the Buckeye State. In 2012 Mitt Romeny lost the Ohio union vote by a whopping 23 points, but this year Trump has pulled a reversal, winning Ohio union households by 6 points.

Throughout Election Night, a team of survey research analysts will be crunching the numbers on who voted, what issues were on their minds and why they voted the way they did.

The team includes Stephanie Psyllos, manager of exit polling, NBC News; Scott Keeter, senior survey advisor at Pew Research Center; Courtney Kennedy, director of survey research at Pew Research Center; Cary Funk, associate director of research at Pew Research Center; Patrick Murray, director of the Monmouth University Polling Institute; Maureen Michaels, president of Michaels Opinion Research Inc.; Mara Ostfeld, postdoctoral fellow, Ford School of Public Policy at the University of Michigan; Patrick Egan, associate professor of politics and public policy at New York University; Hannah Hartig, assistant director, University of Pennsylvania's Program on Opinion Research and Election Studies; Jennifer Su, senior project director, Princeton Survey Research Associates International; and Andrew Arenge, assistant producer, NBC News. The NBC News Exit Poll Desk works closely with digital editors David Taintor and Elizabeth Johnstone to curate the stories we produce.