The Georgia GOP Senate primary has reached its conclusion, and the result sets the stage for one of the most closely watched races of the 2026 cycle. Rep. Mike Collins has emerged as the Republican nominee, and he will now challenge Democratic Sen. Jon Ossoff in November in a contest that could help decide which party controls the U.S. Senate.

CBS News projects that Collins won Tuesday night’s Republican runoff, defeating Derek Dooley, a former college football coach who entered politics as a self-styled outsider.

How Collins Reached the Nomination

The path to the nomination ran through a runoff because no candidate cleared the 50% threshold in last month’s primary. That earlier contest also eliminated a third contender, Rep. Buddy Carter.

A look at the numbers and backgrounds of the two finalists:

• Mike Collins, a trucking business owner who has served in the House since 2023, finished first in the runoff with nearly 41% of the vote.
• Derek Dooley, an attorney and former University of Tennessee football coach, drew around 30% of the vote in last month’s primary. He is the son of legendary University of Georgia coach Vince Dooley.

Trump’s Endorsement and a Proxy Battle

Collins received a significant lift on Sunday when President Trump entered the race and threw his support behind the two-term congressman. The president praised Collins as a loyal ally, describing him as a true friend and fighter who had stood with him from the start.

That endorsement did more than boost Collins — it spotlighted an ongoing rivalry between Trump and Gov. Brian Kemp, who had backed Dooley. The relationship between the two Republicans has long been strained, dating back to Kemp’s refusal to help Trump challenge Georgia’s 2020 presidential election results.

The two candidates positioned themselves differently when it came to the president. Collins leaned into his pro-Trump credentials, pointing to his sponsorship of an immigration bill named for Laken Riley, a Georgia nursing student killed in 2024. Dooley, by contrast, kept some distance, branding himself a political outsider while promising to work with the president on behalf of Georgians.

After Trump’s endorsement, Dooley pushed back, saying on X that the most important endorsement came from the people of Georgia, and arguing he was better positioned to defeat Ossoff.

A Unified Front Going Forward

In his victory speech, Collins signaled that the party intends to move past the divisions of the primary. He said he had spoken with both Dooley and Kemp on election night and that both were now supporting him.

“Now, we stand united around one mission,” Collins told his supporters, framing the goal as putting a Republican in the seat and unseating Ossoff in November.

The Stakes for November

With the runoff settled, Republicans can finally turn their full attention to the general election — a matchup many in the party have been eager to wage for months.

Ossoff occupies a uniquely vulnerable position. As the only Democratic senator seeking reelection in a state Trump carried in 2024, he is widely viewed as the most endangered member of his caucus this cycle. Yet the drawn-out Republican primary has slowed the GOP’s ability to mount a unified attack, and Ossoff has used the time to build a substantial fundraising advantage.

Some context on what’s at play:

• Ossoff, 39, first won his Senate seat in 2021, delivering one of two Georgia runoff victories that handed Democrats their majority.
• Although Georgia shifted rightward in the last election, voters there have not sent a Republican to the Senate since 2016.
• With 53 Republicans currently in the chamber, Democrats are hoping to flip four seats while defending their own, making Georgia a pivotal battleground.

Lines of Attack on Both Sides

Each campaign has already begun sketching out how it plans to frame the opponent.

Republicans intend to cast Ossoff as too closely tied to national Democrats and out of step with Georgia’s values. Collins predicted a difficult fight, warning that national Democrats would work overtime to keep Ossoff in office, and he labeled the senator an out-of-touch, far-left liberal.

Democrats, meanwhile, see opportunities of their own. Collins’ close alignment with Trump could become a liability amid unpopular White House policies. There are also allegations that Collins misused congressional funds — a matter currently under review by the House Ethics Committee. Collins has denied any wrongdoing.

Ossoff wasted no time going on the offensive, calling Collins an extremist in a Tuesday evening statement that sought to link the congressman to Trump’s trade policies, the conflict with Iran, and last year’s tax law.

What Comes Next

With both nominees now set, Georgia is poised to become a central front in the battle for the Senate. The race pits a Trump-aligned congressman against a well-funded incumbent in a state that remains genuinely competitive despite its recent rightward drift.

For Republicans determined to hold their majority, defeating Ossoff sits near the top of the list. For Democrats hoping to protect their path to control, holding Georgia may prove essential. Either way, the months ahead promise an intense and expensive fight for a seat that could shape the balance of power in Washington.