In the unlikely event that President Trump and former Vice President Joe Biden become locked in a 269-269 tie, the House will break it, with each state delegation getting one vote, according to 270 to Win, a nonpartisan political website that projects elections.
"If neither candidate gets a majority of the 538 electoral votes, the election for President is decided in the House of Representatives, with each state delegation having one vote. A majority of states (26) is needed to win. Senators would elect the Vice-President, with each Senator having a vote. A majority of Senators (51) is needed to win," the website states.
"If that were to happen, I think the conventional wisdom is that Republicans would probably be favored," Alexander Burns, a veteran political correspondent for the New York Times, said on the paper's podcast The Daily.
Burns called a tie highly unlikely — and "literally the messiest scenario possible."
The same process would come into play if a third-party candidate were to win enough electoral votes to prevent either candidate from reaching 270.