President Trump has invited the leaders of Michigan's Republican-controlled state legislature to meet him in Washington on Friday, according to media reports, as the president and his allies continue an extraordinary campaign to overturn the results of an election he lost.

Trump lost Michigan by a wide margin. At present, he trails President-Elect Joe Biden in the state by 157,000 votes. 

Trump's lawyer Rudy Giuliani held a 90-minute news conference Thursday where he and his team laid out dubious legal claims, aired debunked conspiracy theories and brought no specific, credible evidence of voter fraud.

Meanwhile, Biden is approaching a record 80 million votes. 

Georgia Secretary of State Brad Raffensperger said on Thursday that a hand audit of ballots in the state had confirmed Biden as the winner of the November 3 election in Georgia. 

The audit was launched after unofficial results showed Biden leading President Donald Trump by about 14,000 votes. 

Raffensperger said there was "no doubt" that the state would certify Biden's victory on Friday. 

"The audit has aligned very close to what we had in election night reporting," Raffensperger told local station WSB-TV. "It's so close, it's not a thimble full of difference." 

With more than 155 million votes counted and California and New York – Democratic bastions – still counting, turnout stood on Thursday at 65 percent of all eligible voters, the highest since 1908, according to data from the Associated Press and the U.S. Elections Project.

(With input from agencies)