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When Will We Know Who Controls Congress? It Could Be a While
The Associated Press will call about 5,000 races, but mail ballots, court disputes and state-by-state rules could delay final control of Congress.
On Tuesday, voters head to the polls in midterm elections that will determine which party controls Congress, representing a major test for President Donald Trump's second term.
Results across 50 states could take anywhere from minutes to weeks to become clear because the US election system is decentralized. During the 2022 midterms, The Associated Press did not call control of the House until eight days after Election Day.
The Associated Press will call results for about 5,000 races with an accuracy rate of more than 99.9%. Data scientist Josh Mendelsohn credits the term "red mirage" to results initially favoring Republicans before shifting as more ballots are counted.
Democrats need a net gain of three seats to reach 218 for a House majority. In the 100-member Senate, Democrats need 51 seats while Republicans need only 50 because Vice-President J.D. Vance holds the tie-breaking vote.
Ranked choice voting in Alaska and Maine may delay final counts, while 15 states allow grace periods for mail-in ballots postmarked by Election Day. Some contested elections could extend until the new Congress is sworn in.