Joe Biden officially clinched the presidency after the Electoral College confirmed his victory Monday, capping a tumultuous period sparked by Donald Trump’s refusal to acknowledge he lost — with the help of Republicans willing to support his unsubstantiated claims.

Some Senate Republicans who had refused to recognize Biden’s overwhelming victory quickly started acknowledging that Trump lost and Biden will be inaugurated as the 46th president on Jan. 20.

The 55 votes from California electors put Biden over the 270 needed to win. Electors in all 50 U.S. states and the District of Columbia cast their ballots for president and vice president in time-honored constitutional ceremonies that took on new importance after Trump insisted without evidence that the election was "rigged.”