President Donald Trump’s push to redraw congressional districts has forced incumbents across the country to adjust their reelection campaigns, with some Democrats facing more Republican-friendly constituencies and several Republicans confronting new Democratic-leaning districts.
The redistricting battle has affected candidates in multiple states through maps enacted by legislatures, approved by voters, or imposed through court action. Some incumbents are competing in unfamiliar territory, while others have retired or shifted districts rather than run under the new boundaries.
The Cook Political Report has projected that Republicans could gain several seats through redistricting, but the changes may not be enough to protect the party’s narrow House majority. Democrats remain competitive in the fight for control of the chamber heading into the Nov. 3 midterm elections.
Florida
Florida Gov. Ron DeSantis (R-FL) signed a new congressional map into law in May, redrawing districts held by Reps. Kathy Castor (D-FL), Darren Soto (D-FL), Lois Frankel (D-FL), Debbie Wasserman Schultz (D-FL), and Jared Moskowitz (D-FL). The changes affect Democratic constituencies in Tampa, Orlando, and South Florida, and Republicans are hoping to improve their standing with the new favorable map.
Castor represents the Tampa area, Soto has represented central Florida, Frankel serves the West Palm Beach area, Wasserman Schultz represents Broward County, and Moskowitz represents part of South Florida. The new boundaries alter the constituencies each candidate must appeal to, forcing them to reach voters who previously lived outside their districts.
Texas
Texas Republicans first spurred the 2026 midterm redistricting blitz, redrawing the state’s congressional map after Trump urged lawmakers to target Democratic-held seats. The changes disrupted the political paths of Reps. Al Green (D-TX), Julie Johnson (D-TX), Greg Casar (D-TX), and Marc Veasey (D-TX), whose districts were significantly altered.
Green represents Houston, while Johnson, Casar, and Veasey have represented districts in the Dallas-Fort Worth and Austin areas. The new boundaries forced Democrats to navigate unfamiliar constituencies and, in some cases, consider different districts. The redistricting effort became the catalyst for Democratic countermeasures in California.
North Carolina
Rep. Don Davis (D-NC) faces a changed political landscape under North Carolina’s new congressional map. Davis represents the 1st Congressional District in eastern North Carolina, a competitive seat Republicans have sought to flip.
Republicans enacted a new map in October 2025, aiming to improve their position in a state where congressional boundaries have repeatedly been contested. The revised lines change the composition of Davis’s constituency, complicating his effort to retain the seat. His race is part of the broader fight over whether Republican map changes will translate into additional seats in November.
California
California voters approved Proposition 50 in November 2025, authorizing a new congressional map intended to counter Republican gains in Texas. The changes complicated reelection plans for Reps. Kevin Kiley (I-CA), Ken Calvert (R-CA), and Darrell Issa (R-CA).
Kiley’s Northern California district was divided among several new districts, and he ultimately chose to run as an independent. Calvert, a longtime Riverside County congressman, is running against fellow Republican Young Kim in a newly configured district. Issa, whose San Diego-area district was redrawn to favor Democrats, announced his retirement in March.
Alabama
Rep. Shomari Figures (D-AL) faces a new challenge after Alabama Republicans revisited the state’s congressional boundaries following the Supreme Court’s ruling in Louisiana v. Callais. Figures, elected in 2024 to represent Alabama’s 2nd Congressional District, won under a map designed to give black voters a greater opportunity to elect their preferred candidate.
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The revised boundaries are more favorable to Republicans, who selected state Rep. Rhett Marques as their nominee to challenge Figures in November. The race will test the electoral effects of the Supreme Court’s decision and the Republican effort to reclaim a seat Democrats won in 2024.
Louisiana
Rep. Cleo Fields (D-LA) opted against seeking reelection after Louisiana redrew his majority-black district following the Supreme Court’s Callais ruling. Fields, a former state legislator who returned to Congress in 2024, said in July he would instead seek a return to the Louisiana Senate.
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The new congressional map, signed by Gov. Jeff Landry (R-LA) in May, reshaped Fields’s district to favor Republicans. The case centered on whether the state’s previous map relied too heavily on race when creating a second majority-black district. Fields’s decision leaves the revised district open, and election forecasters shifted the race toward Republicans.
Ohio
Reps. Marcy Kaptur (D-OH) and Greg Landsman (D-OH) face different challenges under Ohio’s new congressional map, approved in October 2025. Kaptur, who has represented northwest Ohio since 1983, is defending a Toledo-area district redrawn to improve Republican prospects. She faces Republican Derek Merrin in November.
Landsman, who represents the Cincinnati area, is seeking another term against Republican Eric Conroy in a district whose new boundaries also make the race more competitive for Republicans. The map emerged from a state redistricting process required by law, but its partisan consequences could be significant: both incumbents must defend districts whose political composition has changed.
Tennessee
Republicans dismantled Rep. Steve Cohen’s (D-TN) Memphis-based district in May, splitting its voters among three Republican-leaning congressional districts. Cohen, who had represented the area for nearly two decades, announced he would not seek reelection under the new boundaries.
He argued the map diluted black political representation by dividing Memphis among districts designed to favor Republicans. Tennessee’s Republican-controlled legislature approved the map shortly after the Supreme Court’s Callais ruling. Cohen’s departure leaves Democrats without their longtime incumbent in the district and gives Republicans an opportunity to pursue all nine of Tennessee’s House seats.
Utah
Utah’s court-ordered map has reshaped the state’s congressional delegation, forcing Reps. Blake Moore (R-UT), Celeste Maloy (R-UT), and Mike Kennedy (R-UT) to run in different districts. Moore, previously the 1st Congressional District representative, is running in the new 2nd District; Maloy moved from the 2nd to the 3rd; and Kennedy shifted from the 3rd to the 4th.
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Rep. Burgess Owens (R-UT), who represented the 4th District, announced his retirement rather than seek another term under the new boundaries. The map followed a court ruling that Utah lawmakers had violated voters’ rights by overriding an independent redistricting process. It also creates a new Salt Lake City-centered district that offers Democrats a potential path to regain a seat in the state’s delegation.