Just 26%, or about one in four registered Oklahoma voters, cast a ballot in the race, according to an analysis of the results. In total, 630,085 people weighed in on a state question to gradually increase the minimum wage. It was the only race open to Democrats, Republicans and independents, who weren't eligible to vote in partisan races. Democrats have typically opened their closed primaries to include independents, but failed to submit the paperwork for this year’s primaries on time.