Democrat Raphael Warnock defeated Republican U.S. Sen. Kelly Loeffler to become the first Black senator in Georgia history, capturing one of two Georgia runoffs that will decide control of the U.S. Senate and shape Joe Biden’s presidency.

In the other contest, Democrat Jon Ossoff declared victory as he held a slim but widening lead over U.S. Sen. David Perdue. If Ossoff prevails, Democrats will hold control of Congress when Biden takes office on Jan. 20.

National outlets projected Warnock’s victory early Wednesday, hours after he surpassed Loeffler in the vote total. Loeffler told supporters that victory was still possible, though most of the remaining uncounted ballots originate from Democratic-leaning counties.

Warnock, the pastor of Atlanta’s historic Ebenezer Baptist Church, is the first Georgia Democrat to win a statewide contest since 2006, and his stunning victory was fueled by epic turnout from African American voters and strong support across metro Atlanta’s suburbs.

It came on the heels of Biden’s narrow November victory in Georgia, which made him the first Democratic presidential nominee to capture the state since 1992 and offered partisans a road map to winning a second round in January.

Warnock followed that route by tapping into voter frustration over Republican policies with a promise to enact sweeping new voting rights legislation, expand affordable health care and boost public health funding to contain the coronavirus pandemic.

In his victory speech early Wednesday, Warnock spoke of his unlikely path to the Senate and noted that his mother used to “pick somebody else’s cotton” during her childhood in rural Waycross.

“We were told that we couldn’t win this election. But tonight we proved that with hope, hard work and the people by our side, anything is possible,” Warnock said. “May my story be an inspiration to some young person who is trying to grasp and grab hold to the American dream.”

Republicans signaled they would not soon concede the high-stakes races. Perdue’s campaign said it would “mobilize every available resource and exhaust every legal recourse.” And Loeffler told a cheering crowd shortly after midnight that she still had a “path to victory.”

“This is a game of inches,” she said. “We are going to win this election.”

Republican U.S. Sen. David Perdue, from left, Democrat Jon Ossoff, Republican U.S. Sen. Kelly Loeffler and Democrat Raphael Warnock.

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Ossoff’s campaign expressed confidence he would win as the final votes were tallied. And he posted a video shortly after dawn broke thanking voters for electing him – and urging unity to “beat this virus and rush economic relief to the people of our state and to the American people.”

“I am honored - honored - by your support, by your confidence, by your trust,” he said. “And I will look forward to serving you in the United States Senate with integrity, with humility, with honor and getting things done for the people of Georgia.”

A wild campaign

The races ended the way they started, with a concerted appeal to each party’s most loyal supporters. On Monday, Biden visited Atlanta to promise Democratic victories would restore “hope and decency and honor” to Washington, while President Donald Trump called on supporters at an evening rally in Dalton to “swamp” the polls.

At stake is control of the Senate, where Republicans had a 50-48 edge before the runoffs. Democrats need to sweep both the elections to gain control of the chamber, with Kamala Harris as the tie-breaking vote once she becomes vice president.

President Donald Trump held a rally Monday in Dalton to support the campaigns of Republican U.S. Sens. David Perdue and Kelly Loeffler in their runoffs against Democrats Jon Ossoff and Raphael Warnock, respectively. Trump called the runoff "a biggie."   (Curtis Compton / Curtis.Compton@ajc.com)

Credit: Curtis Compton / curtis.compton@ajc.com

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Credit: Curtis Compton / curtis.compton@ajc.com

None of the four candidates in Tuesday’s election received the necessary majority of the vote in November. That triggered the runoff, an all-out political contest between dueling Republicans and Democrats who effectively ran as joint tickets over the past nine weeks.

The race was rocked over the weekend by Trump’s extraordinary demand to Secretary of State Brad Raffensperger to “find” enough votes to reverse his November election defeat in Georgia. Democrats framed the recording as a brazen attempt to undermine democracy, while the GOP campaigns sought to minimize it.

Though the recording was an unexpected bombshell, Trump’s influence shaped the race from the outset. The two Republicans have aggressively appealed to the president’s die-hard devotees, backing his push for $2,000 stimulus checks and echoing his debunked claims of widespread voting fraud.

And on the eve of the election, both Republicans announced they supported the doomed effort by some Senate Republicans to challenge the Electoral College results in Congress on Wednesday. Loeffler was greeted with cheers — and chants of “fight for Trump” — when she announced the decision at the Dalton rally with the president.

Even after defeat, Loeffler plans to return to Washington on Wednesday to contest Biden’s victory in Congress.

“We are going to keep fighting for you,” Loeffler told the crowd.

Mara Braziel votes Tuesday at Georgia Tech's McCamish Pavilion. (John Spink / John.Spink@ajc.com)

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Credit: JOHN SPINK / AJC

Ossoff and Warnock framed their campaign around an image of a post-Trump America where Democrats can push measures promising to boost funding to fight the pandemic, expand health care access and adopt a sweeping voting rights measure.

They were bombarded by attacks from the two Republican incumbents and their allies, who aimed their appeals at the party’s most conservative factions by describing the Democrats as “radical liberals” and warning that only GOP control of the Senate could “save America” from socialism.

The Republicans also had to face down tough attacks, including numerous ads accusing the incumbents of profiting from the coronavirus pandemic through stock transactions made on their behalf. Both say that federal investigators have reviewed their stock deals and cleared them of any wrongdoing.

Loeffler’s defeat is a decisive blow to Gov. Brian Kemp, who picked her to fill the seat over the objections of Trump. She survived a tough challenge from the president’s preferred pick, U.S. Rep. Doug Collins, emerging as the leading Republican in a special election of 21 candidates to gain a spot in the runoff.

Warnock had an easier path to November, having consolidated support from state and national Democrats before he entered the race. The first-time candidate, whose church is the spiritual home of the Rev. Martin Luther King Jr., cast himself as a moral voice for a Congress in conflict.

The other contest featured Perdue, a former Fortune 500 chief executive who emerged from a crowded field in 2014 to win his first term. He was one of the earliest supporters of Trump, and depicted Ossoff as an inexperienced waif unprepared for the rigors of the Senate.

Ossoff relentlessly painted the Republican as a crooked member of the Washington establishment, and the Democrat leaned on his experience running an investigative journalism firm to frame himself as a crusader against corruption.

Kamal Gillespie, left, verifies his voter ID information to poll workers Brandy Allen (center) and Cuedriene Edwards on Tuesday at the Park Tavern in Atlanta. (John Spink / John.Spink@ajc.com)

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Credit: JOHN SPINK / AJC

The GOP incumbents were hobbled by a president who has engaged in unrelenting open warfare with state GOP leaders who defied his calls to overturn the state’s election. At Monday’s rally, he promised to return next year to wage campaigns against both Kemp and Raffensperger, two of his favorite punching bags in Georgia.

Democrats faced their own challenges. The biggest is whether they could draw back to the polls the coalition of African American voters and Atlanta suburbanites who helped fuel Biden’s slim victory in Georgia, this time without a presidential contest on the ballot.

And all four candidates had to overcome exhaustion from voters bombarded by an onslaught of ads, teams of canvassers, text messages, digital messaging and other breathless appeals to vote. Celebrities cajoled them to vote, and big-name politicos have fanned out across the state to hold rallies.

More than $830 million has been spent on the races, an astonishing total that will only rise as the final spending comes into clearer view. And more than 4 million Georgians cast their ballots, surpassing the number of votes cast in Georgia during the 2016 race for the White House.

Staff writer Kristal Dixon contributed to this article.