An analysis of voter turnout data indicates that differential participation rates were the primary driver behind Democratic victories in the South during the 2026 midterm elections. While midterm elections typically see lower participation than presidential contests, counties that supported former Vice President Kamala Harris in 2024 maintained turnout levels closer to presidential benchmarks, whereas counties won by President Trump experienced a sharper decline in voter participation.
In six southern states—Louisiana, Mississippi, Alabama, Georgia, South Carolina, and North Carolina—turnout dropped by 19% in Harris-won counties compared to a 26% drop in Trump-won counties. This disparity resulted in an average swing of 22 points toward Democrats across these states, exceeding the national swing of approximately 14.5 points. The turnout gap contributed to Democratic flips in Senate seats in North Carolina, South Carolina, and Mississippi, and narrowed the margin in Louisiana’s Senate race.
What the Left Is Saying
Democratic candidates in the South outperformed the 2024 presidential baseline, with nominees in the six analyzed states securing more raw votes than Harris in 170 counties. In Mississippi, Sen.-elect Scott Colom (D) earned roughly 8,100 more votes than Harris did in 2024, defeating incumbent Sen. Cindy Hyde-Smith (R) by a margin of just over 5,600 votes. In Georgia, Sen. Jon Ossoff (D) finished with approximately 79,000 fewer votes than Harris, despite a total vote count drop of more than one million, securing a 14-point victory and flipping 12 counties.
Progressive analysts point to a surge in Black voter participation as a key factor, particularly following the Supreme Court’s decision in Louisiana v. Callais, which altered congressional maps in Tennessee, Alabama, Louisiana, and North Carolina. Majority-Black counties recorded about 85% voter turnout, compared to 76% in white, non-Hispanic majority counties. Sixteen majority-Black counties saw increased Democratic votes compared to 2024, with 12 of those located in Mississippi. Clay County, Miss., saw the largest turnout increase, rising by 17 points from 2024 to 2026.
What the Right Is Saying
Conservative observers note that the Republican decline was most pronounced in North Carolina, where former Gov. Roy Cooper (D) won the Senate race by a 20-point margin. Republican candidate and former RNC Chair Michael Whatley received 1.25 million fewer votes than President Trump did in 2024, representing a roughly 43% drop in GOP support. No county or parish in the six analyzed states came close to matching Trump’s 2024 vote totals.
The data shows that Republican support eroded significantly in suburban areas. In Georgia, counties including Fulton, Gwinnett, Cobb, DeKalb, and Cherokee lost between 35,000 and 77,000 Republican votes each. In North Carolina, Wake and Mecklenburg counties, home to Raleigh and Charlotte, saw the largest drops, with about 100,000 and 90,000 fewer GOP voters respectively. In South Carolina, Greenville, Spartanburg, and Lexington counties recorded the largest increases in raw Democratic votes from 2024, with Greenville, which Trump won by 20 points in 2024, flipping to support Sen.-elect Annie Andrews (D) by about two points.
What the Numbers Show
Turnout in Harris-won counties dropped 19% from 2024 levels, while turnout in Trump-won counties dropped 26%. The average Democratic swing in the six southern states was 22 points, compared to a national average of 14.5 points. Democratic Senate nominees outperformed Harris in raw votes in 170 counties across the six states. In Mississippi, the final tally shows Colom leading Hyde-Smith by just over 5,600 votes. In Georgia, all 159 counties shifted toward Democrats, with Ossoff flipping 12 counties. Majority-Black counties had an overall turnout of 85%, while white, non-Hispanic majority counties had 76% turnout.
The lowest Republican retention rate was in North Carolina, where GOP votes fell to two-thirds of their 2024 total. The only county where Republicans retained more than 80% of Trump’s 2024 raw votes was Greene County, Ga. In North Carolina, Sen.-elect Cooper won by 20 points, while in South Carolina, Sen.-elect Andrews won by approximately two points in a county that Trump had previously won by 20 points. These figures highlight a significant divergence in party loyalty and mobilization efficiency between the two major parties in the region.
The Bottom Line
The 2026 midterm results in the South demonstrate that turnout dynamics, rather than purely ideological shifts, determined key Senate races. The combination of sustained Democratic mobilization, particularly among Black voters and in suburban areas, and a significant disengagement among Republican base voters in urban and suburban centers, created the conditions for Democratic gains. With final ballots still being tallied in close races like Mississippi, the extent of these turnout differences will likely be a central focus for party strategists as they prepare for future elections. The redrawing of congressional maps following the Louisiana v. Callais decision has also reshaped the electoral landscape, contributing to Democratic gains in state delegations, such as North Carolina’s projected 11-3 Democratic majority.