The Republican senator told her supporters that "it's worth it for this election to last into tomorrow."
There are just days to go until the Georgia runoffs, an election that is poised to decide which political party controls the Senate during the Biden administration.
Kemp called the disputes over the results of the presidential election "a distraction" from Georgia's Senate runoffs next month.
Recent polls are mixed, with some showing the Republican incumbent in the lead and others putting the Democratic challenger narrowly ahead.
Among the signees in the letter were people who have criticized Warnock for his views on abortion.
Senator Loeffler trailed Reverend Warnock in the November election, but without Representative Doug Collins in the running, she may be able to gain his supporters' votes.
The two Democratic challengers are so far outspending the Republican incumbents in Georgia.
Incumbent Republican Senator Loeffler rarely referenced her Democratic challenger Raphael Warnock without using the term.
"You're seeing irrational, angry behavior, it's unpatriotic," Brad Raffensperger said Sunday. "We had an election, like I said, I wish my guy would have won and it looks like he's not."
President Donald Trump told supporters 'I like cucumbers—I'm the only one' during a rally in Georgia.
Jon Ossoff and Reverend Raphael Warnock hold a tight lead in the polls as President Donald Trump, Vice President Mike Pence, former President Barack Obama and former gubernatorial candidate Stacey Abrams all head into a weekend of campaigning before Georgia's voter registration deadline closes.
Inspired by fellow romance novelist and voter rights advocate Stacey Abrams, Romancing the Runoff organized an auction for the two Democratic Senate candidates ahead of the Georgia runoffs.
Control of the Senate will be decided in two crucial runoff elections and the topic of President Trump could dominate the race.
"I am calling on them to make the commitment today that they will require masks at their political events and that they will cease crowding people into these indoor spaces where there's this high risk of COVID being spread," Ossoff said Monday.
On Monday, Georgia extended two emergency rules to continue the use of secure drop boxes and to require counties begin processing absentee ballots eight days before Election Day.
Raphael Warnock leads his Senate race against Senator Kelly Loeffler by one percentage point, while Jon Ossoff is tied neck and neck with Senator David Perdue.
"Republicans had a plan for stopping voters from getting to the polls. We beat them in multiple states and flipped the outcome," the former Georgia gubernatorial candidate said.
Senator Kelly Loeffler is hammering her Democratic challenger, Reverend Raphael Warnock, for a murky alleged connection to Fidel Castro, but Warnock said he had "nothing to do" with the event in question.
Loeffler tweeted a video of rival Raphael Warnock giving a sermon in October 2016, calling his rhetoric "disgusting and offensive."
Georgia Secretary of State Brad Raffensperger warned that those who plan to move to the state just for the election could be punished.
Perdue's new ad says the Democrats are pushing for "total Democratic control" in Georgia's runoff elections.
Georgia's Secretary of State Brad Raffensperger said it's "unlikely" that instances of illegal voting is what could cost President Donald Trump the state's 16 electoral college votes.
The pollster recently tweeted about the possibility of two runoff races that could determine the future of the U.S. Senate, and the "Top Chef" judge doesn't want to hear it.
A Georgia Democratic candidate for secretary of state attended a debate alone after his Republican opponent, who was recently touted by Trump, did not show up due to an alleged "scheduling conflict."
Iván Duque has emerged victorious and will face off against Gustavo Petro in a second round. What is really at stake for the South American country?
Polls close at 7 p.m. EDT.
Democrats are hoping Jon Ossoff can flip a reliably Republican seat in the Atlanta suburbs when voters go to the polls Tuesday.
The parties of two front-runners said initial tallies showed they had passed to a second round run-off next month.