Fresh off a government spending deal that left many Republicans unhappy with Speaker Mike Johnson (R-LA), lawmakers are returning to Capitol Hill on Jan. 3 to swear in new members and determine whether Johnson keeps his gavel — three days before the House meets to the certify President-elect Donald Trump’s Electoral College win.

However, discontent is circulating throughout the Republican conference, and any defection from Johnson supporters could result in a lengthy speakership battle and a possible delay in certifying their party leader’s ascent to the White House.