Redistricting Adds 10 Red-Leaning House Seats for 2026 Midterms

An internal House Republican assessment obtained by the BBC states that the redistricting battle for the 2026 midterms created 10 additional red-leaning seats in the House of Representatives. Democrats must now defend 23 House seats that President Donald Trump won in 2024, up from 13 at the beginning of the midterm cycle.

Republicans hold eight seats that the Democratic nominee Kamala Harris won, up from three at the start of the 2026 cycle.

The overall reshuffling amounts to a potential gain of five favourable seats for Republicans, according to the assessment by the National Republican Congressional Committee. The internal evaluation came after the last states that participated in redistricting finished redrawing their maps last month. House Republicans have a 217-212 majority with five vacancies.

Democrats drew new maps in California and Virginia. The changes in Virginia were struck down in court. A Supreme Court decision overturned a key provision of the Voting Rights Act, which paved the way for some states to draw new congressional lines.

The Cook Political Report rates 18 House races as tossups. Of those, 17 were won by Trump in 2024. At the start of the 2018 election cycle, House Republicans controlled 42 districts where Trump received less than 50 percent of the vote in the previous presidential election.

There are now only 14 Republican-held districts where Trump did not win a majority of the vote in 2024. House Republicans flipped nine seats in the 2022 midterms.

Since 1934, the party in control of the White House has won House seats in just three midterm elections. The president's party has gained Senate seats in just six midterms since 1934. Mike Marinella, the NRCC's spokesman, said: "Democrats are climbing an uphill battle, and their outlook for the House gets darker by the day.