Democrats were quick to criticize both the president and the Republican senators who have taken great pains to portray themselves as his champions. “That is a direct attack on our democracy, and if David Perdue and Kelly Loeffler had one piece of steel in their spines, one shred of integrity, they would be out here defending Georgia voters from that kind of assault,” Mr. Ossoff said at the afternoon rally near Savannah.
Ms. Harris, who spoke afterward, said: “Have y’all heard about that recorded conversation?” adding that “it was certainly the voice of desperation” and calling it a “bold abuse of power by the president of the United States.”
The call also raised new questions about how much Mr. Trump would focus during his rally on Monday in Dalton, Ga., on his unsubstantiated claims of electoral fraud, at the expense of the message that Republicans still need to turn out for the runoffs.
Mr. Ossoff, the head of a video production company, is challenging Mr. Perdue, a former business executive who is quarantining because of possible exposure to the coronavirus. Mr. Warnock, the pastor of Ebenezer Baptist Church in Atlanta, where the Rev. Dr. Martin Luther King Jr. once preached, is running against Ms. Loeffler, a wealthy businesswoman.
Both Mr. Warnock and Mr. Ossoff joined Ms. Harris at the rally on Sunday outside Savannah, where Mr. Warnock was born and raised.
Savannah, founded in 1733, is Georgia’s oldest city, and arguably its most beautiful and beguiling. In statewide races, it can sometimes seem like a political afterthought, given its relatively small size compared with metropolitan Atlanta.
But there are good reasons that Savannah enjoyed a turn in the spotlight two days before Election Day. Chatham County, population 290,000, has long been a reliable Democratic stronghold, anchored by Savannah and its African-American majority. Enthusiasm among Democrats in the county surged significantly in November, when Mr. Biden’s vote total surpassed Hillary Clinton’s in 2016 by nearly 16,000 votes.