Biden's win came as voter turnout rose 7% over 2016, resulting in a total of 66% of U.S. adult citizens casting a ballot in the 2020 election, the Washington, D.C.-headquartered center said. Biden's popular vote differential was also better than fellow Democrat Hillary Clinton's 2016 two-point advantage, according to the fact tank.

Republicans haven’t won the popular vote in a presidential contest since 2004 — when President George W. Bush got 62 million votes. Ronald Reagan won 54 million votes in his landslide