THE Electoral College on Monday began voting to make President-elect Joe Biden’s victory in the 2020 presidential election official.

All 538 electors will meet in their respective states to cast their votes for president based on the election results that were recently certified by all 50 states and Washington, D.C.

Most electors, who were chosen by political parties in each state ahead of the November election, are expected to cast their ballots in state Capitol buildings.

The first states to vote Monday were Indiana, New Hampshire, Tennessee and Vermont, which started to vote at 10 a.m. ET. Vermont’s and New Hampshire’s electors cast their combined 7 votes for Biden, while Tennessee and Indiana awarded their 22 total votes to Trump. Battleground states that have been hotly contested with legal challenges by President Donald Trump vote a little later — Arizona, Georgia and Pennsylvania’s electors are slated to vote at noon, while Wisconsin’s are scheduled to vote at 1 p.m. and Michigan’s at 2 p.m.

In Michigan, the state Capitol will be closed during the vote because of threats of violence and anticipated protests.

California, which has 55 Electoral College votes, the most of any state, and could put Biden over the top is set to vote at 5 p.m. ET.

Biden is expected to deliver remarks in prime time about the Electoral College vote around 8 p.m. ET.