Preliminary estimates indicate the 2020 presidential election had the highest turnout rate since 1900, according to the United States Elections Project.

University of Florida political science professor Michael McDonald, who maintains the data project, said Wednesday morning that 160 million people voted in Tuesday's election, for a turnout rate of 66.9 percent. McDonald said the turnout rate was the highest in 120 years, with a 73.7 percent turnout rate in 1900.

“That is not a typo. The 2020 presidential election had the highest turnout rate in 120 years,” McDonald said on Twitter.

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“There is still a fair amount of guesswork involving outstanding ballots to be counted," he added. "I will continue to refine these estimates over the coming weeks.”

As of Wednesday morning, the race between President TrumpDonald TrumpGraham says he hopes that Trump runs again Trump says Stacey Abrams 'might be better than existing governor' Kemp Executive privilege fight poses hurdles for Trump MORE and Democratic nominee Joe BidenJoe BidenHaiti prime minister warns inequality will cause migration to continue Pelosi: House must pass 3 major pieces of spending legislation this week Erdoğan says Turkey plans to buy another Russian defense system MORE was too close to call, with results still outstanding in key states like Georgia, Pennsylvania, Michigan and Wisconsin.