Dan Fisher

Jackie Fortier / StateImpact Oklahoma

Polls have closed in Oklahoma. We'll be updating this post as results come in.

Updated 12:28 a.m.

Former Oklahoma City mayor Mick Cornett will face Tulsa businessman Kevin Stitt in a runoff for the Republican nomination for governor.

Cornett, Stitt and Lt. Gov. Todd Lamb were all polling closely leading into Tuesday's primary election. There had to be an odd man out to reach to the runoff. The odd man out was Lamb.

Cornett finished with near 29 percent of the vote. With 1948 of 1951 precincts reporting, Stitt led Lamb 24.43 to 23.88 percent.

William Faulkner wrote, "The past is never dead. It's not even past." And that's never more true than when people start arguing over how American history should be taught in school.

The current fight involves the Advanced Placement U.S. history exam. Nearly half a million high school students took the test last year, hoping to earn college credit.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

KELLY MCEVERS, HOST: