First Lady Melania Trump began the rally by telling Georgians that it's more important than ever "that you exercise your rights as a citizen and vote".
But the decision for Trump's base on whether or not to vote in Georgia's race is more complicated.
Trump's insistence that the presidential election was "stolen" - and particularly so in Georgia, he claims - has created an extraordinary quandary for his supporters. If the system is "rigged" against them, why vote again?
Lin Wood, a local celebrity lawyer and turbocharged Trump advocate, recently declared: "This is Georgia, we ain't dumb. We ain't gonna go vote on January 5 on another machine made by China. You're not gonna fool Georgians again. Why would you go back and vote in another rigged election?"
The lawyer's comments at a Georgia "Stop the Steal" rally, where former Trump attorney Sidney Powell also spoke, set alarm bells ringing, not just in Georgia, but in the White House.
At a rally in Savannah on Friday night, Vice President Mike Pence said: "Georgia, I came here to say 'Stay in the fight'. Stay in the fight to defend the Republican majority in the Senate. Stay in the fight until the polls close on January 5.
"I know we've all got our doubts about the last election. And I actually hear some people saying 'Just don't vote'. My fellow Americans, if you don't vote, they win!"
If Pence's appeal sounded a little desperate, it was because these are desperate times for Republicans, who could lose Georgia's elections and give Democrats control of both houses of the US Congress in addition to the presidency.
Trump warned voters in Georgia it would be a mistake not to vote in the runoff elections.
"Let them steal Georgia again, you'll never be able to look yourself in the mirror," the President told rallygoers.
- additional reporting Daily Telegraph UK
