Turnout appears strong as voters cast ballots in a tight race that will determine whether incumbent Democrat Sen. Claire McCaskill can withstand a challenge from Republican Josh Hawley.
In south St. Louis, 37-year-old Amanda Cline waited almost an hour for a ballot. She told the St. Louis Post-Dispatch that it "almost feels like a presidential election." She says its "good to see a lot of people."
Outside Rock Bridge Christian Church in Columbia, the line began forming before the doors opened. Poll volunteer Lisa Glass told the Columbia Missourian that it is the most voters she has ever seen.
Greene County Clerk Shane Schoeller described the lines as steady. The Springfield News-Leader reports that by 10 a.m. Tuesday, 12 percent of all active voters in the county had cast their ballots.