• Starting at 1 p.m. on Wednesday, a joint session of Congress will gather in the House chamber to count the 2020 presidential race’s Electoral College votes submitted by every state and the District of Columbia.
• For the first time in American history, dozens of Republican lawmakers from both chambers are planning on challenging multiple slates of electors under the Electoral Count Act. 
• One member of the House and one member of the Senate must raise an objection for both chambers of Congress to separately debate and vote on whether to accept the electors. 
• Follow along for live updates. 
• Visit Business Insider’s homepage for more stories.

A joint session of Congress led by Vice President Mike Pence will convene in the House chamber starting at 1 p.m. ET on Wednesday to oversee the counting of slates of presidential electors. 

The event, which in most years is simply a procedural formality, holds particular significance in 2021 in further affirming President-elect Joe Biden’s victory in the presidential race after outgoing President Donald Trump and his allies spent two months attempting to overturn the 2020 election results.

Dozens of House lawmakers and 13 Republican Senators, as of Wednesday, are planning on raising objections to counting at least one and possibly multiple slates of electors under the Electoral Count Act of 1887, which permits lawmakers to raise objections to specific states’ electors.

Biden won 306 Electoral College votes compared to 232 for Trump. 

Politico reported on Tuesday that lawmakers from both chambers have garnered the most support for objections to slates of Biden electors from Arizona, Georgia, and Pennsylvania, with challenges to other states still on the table. 

One member of the House and one member of the Senate must raise an objection for both chambers of Congress to separately debate and vote on whether to accept the electors, and both chambers must each vote by simple majority to reject it. 

Democrats control the House and Republicans temporarily hold a narrow majority in the Senate. With 20 GOP senators publicly stating that they support the Electoral College results and do not plan to object to electoral votes, any challenges are virtually guaranteed to fail.

Read more: Here’s what the Georgia Senate results mean for voting rights, cannabis, and $2,000 stimulus checks

Follow along for live updates and watch the proceedings below: