On May 9, Oklahoma held a special election to fill the vacant State House seat, 28th district, centered on Seminole County in the center of the state. The results: Republican Zack Taylor 50.48%; Democrat Steve Barnes 48.16%; Libertarian Cody Presley 1.36%.
In November 2016, the results in this seat had been: Republican 66.82%; Democratic 33.18%.
And in individual votes, it looks even closer (AV + early + Election Day votes = totals):
ZACK TAYLOR (REP) 65 40 1,116 1,221 50.48%
CODY PRESLEY (LIB) 4 2 27 33 1.36%
STEVE BARNES (DEM) 28 77 1,060 1,165 48.16%