Two US Senate elections in the state of Georgia, which will determine whether Democrats or Republicans control the upper chamber of Congress, were too close to call hours after polls closed on Tuesday night.
The result of the two elections will prove pivotal for Joe Biden’s presidency: if Democrats win both contests, they will control the Senate along with the House of Representatives, giving Mr Biden more room for manoeuvre as he tries to implement his legislative agenda.
The run-offs, which were automatically triggered after none of the candidates earned more than 50 per cent of the vote in the general election on November 3, saw incumbent Republicans Kelly Loeffler and David Perdue challenged by Democrats Raphael Warnock and Jon Ossoff, respectively.
The Republicans were narrowly ahead with more than three-quarters of precincts reporting late on Tuesday, but more than a million votes have yet to be counted both in urban areas that favour Democrats as well as some small rural Republican strongholds.
If Republicans win either race, they will maintain control of the Senate and with it the power to obstruct Mr Biden’s legislative agenda. But if Democrats are victorious in both contests, they will control the Senate by the narrowest of margins, 50-50, with incoming US vice-president Kamala Harris casting a tiebreaking vote.
Democrats already control the House of Representatives, albeit with a diminished majority following the November election.
Mr Trump and Mr Biden both made last-minute visits to Georgia on Monday in an effort to motivate their supporters. Early voting figures suggested a strong performance for Democrats before polling day, but Republicans said they were confident that their supporters would turn up on Tuesday to cast their ballots in person.
Republicans were considered the favourites heading into Tuesday’s run-offs, given that the party has dominated the political landscape in Georgia for decades.
But Democrats found optimism in Mr Biden’s narrow victory in the state’s presidential contest in November. With 5m votes cast, Mr Biden became the first Democrat to win Georgia in almost three decades, defeating Mr Trump in the state by a razor-thin margin of just under 12,000 votes.
“We do come in as slight underdogs, but the things that we needed to go right have largely gone right,” Sean McElwee of the Democratic pollster Data for Progress said before the polls opened on Tuesday. “It will be a really close race.”
It remained unclear how the Senate races would be affected by Mr Trump’s repeated attempts to undermine the result of the presidential election.
Although the president has campaigned on behalf of Mr Perdue and Ms Loeffler, some strategists fear that his accusations that the voting system is rigged could have prompted Republican voters to stay at home.
At Monday night’s rally, the president encouraged people to vote for the Republican candidates before spending more than an hour repeating his unsubstantiated claims of voter fraud.
“In a normal election cycle, without a president going psycho . . . I think the GOP would have significant advantages here. But that’s not the election we’re in,” said Bill Crane, a political analyst in Atlanta, ahead of Tuesday’s vote.
“[Mr Trump] is not on the ballot directly. But because he won’t get out of the headlines and out of the news cycle and shut up, he is in on the ballot.”
After the polls closed on Tuesday night, Mr Trump texted supporters: “Is it true that voting machines stopped working earlier in Georgia today? Are Dems trying to STEAL this election?”
State officials rejected Mr Trump’s claims, saying the election ran “smoothly” across the state.