A partisan redistricting battle among states has accelerated ahead of the November midterm elections following a U.S. Supreme Court ruling that weakened the federal Voting Rights Act and opened the way for states to try to eliminate voting districts drawn for racial minorities.
Legislative voting districts typically are redrawn based on census data after the start of each decade. But an unusual spate of mid-decade redistricting broke out after President Donald Trump urged Texas Republicans last year to reshape U.S. House districts to give the party an edge in the midterm elections. Democrats in California countered with their own political gerrymandering. More states followed.
Eight states have already adopted new House maps, and several more are considering it. So far, Republicans believe they could win up to 13 additional seats from new districts in Texas, Florida, Missouri, North Carolina and Ohio. Democrats, meanwhile, think they could gain up to 10 seats from new districts in California, Utah and Virginia.
But those tallies presume past voting patterns hold in November. Historically, the president's party tends to lose seats in the midterms. Democrats need to gain just a few seats in November to wrest control of the House from Republicans, which would give them greater power to oppose Trump.
Where new House districts are proposed
Lawmakers in at least three states are meeting to consider plans for new U.S. House maps.
Louisiana
Current map: two Democrats, four Republicans
New map: Republican Gov. Jeff Landry has postponed the May 16 congressional primary to allow lawmakers to revise U.S. House districts in response to an April 29 Supreme Court ruling striking down a majority Black congressional district.
Challenges: Several lawsuits have been filed in federal and state court asserting that Landry lacked authority to suspend the primary elections.
Alabama
Current map: two Democrats, five Republicans
New map: Republican state officials hope to revert to a U.S. House map passed in 2023 — but not previously used — that could help Republicans win an additional seat.
Challenges: The current map was imposed under a court order and is supposed to be used until after the 2030 census. State officials have asked the U.S. Supreme Court to set aside that order in light of its ruling in the Louisiana redistricting case.
Tennessee
Current map: one Democrat, eight Republicans
New Map: Republican Gov. Bill Lee has called lawmakers into special session to consider a new U.S. House map that could carve up a Black-majority district in Memphis and improve Republican chances of winning an additional seat.
Challenges: The candidate qualifying period already has ended for the primaries, which are scheduled for Aug. 6.
Where new House districts were approved
New U.S. House districts have passed in eight states since last summer. Six took up redistricting voluntarily, one was required to by its state constitution and another did so under court order.
Texas
Current map: 13 Democrats, 25 Republicans
New map: Republican Gov. Greg Abbott signed a revised House map into law last August that could help Republicans win five additional seats.
Challenges: The U.S. Supreme Court in December cleared the way for the new districts to be used in this year’s elections. It has since overturned a lower-court ruling that blocked the new map because it was “racially gerrymandered.”
California
Current map: 43 Democrats, nine Republicans
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New map: Voters in November approved revised House districts drawn by the Democratic-led Legislature that could help Democrats win five additional seats.
Challenges: The U.S. Supreme Court in February allowed the new districts to be used in this year’s elections. It denied an appeal from Republicans and the Department of Justice, which claimed the districts impermissibly favor Hispanic voters.
Missouri
Current map: two Democrats, six Republicans
New map: Republican Gov. Mike Kehoe signed a revised House map into law last September that could help Republicans win an additional seat.
Challenges: A Cole County judge ruled the new map is in effect as election officials work to determine whether a referendum petition seeking a statewide vote complies with constitutional criteria and contains enough valid petition signatures. The Missouri Supreme Court rejected a lawsuit claiming mid-decade redistricting is illegal. It’s scheduled to hear arguments in May on claims the new districts violate compactness requirements and should be placed on hold pending the potential referendum.
North Carolina
Current map: four Democrats, 10 Republicans
New map: The Republican-led General Assembly gave final approval in October to revised districts that could help Republicans win an additional seat.
Challenges: A federal court panel in November denied a request to block the revised districts from being used in the midterm elections.
Ohio
Current map: five Democrats, 10 Republicans
New map: A bipartisan panel composed primarily of Republicans voted in October to approve revised House districts that improve Republicans’ chances of winning two additional seats.
Challenges: None. The state constitution required new districts before the 2026 election, because Republicans had approved the prior map without sufficient Democratic support after the last census.
Utah
Current map: no Democrats, four Republicans
New map: A judge in November imposed revised House districts that could help Democrats win a seat. The court ruled that lawmakers had circumvented anti-gerrymandering standards passed by voters when adopting the prior map.
Challenges: A federal court panel and the state Supreme Court, in February, each rejected Republican challenges to the judicial map selection.
Virginia
Current map: six Democrats, five Republicans
New map: Voters approved a constitutional amendment on April 21 authorizing new U.S. House districts backed by Democrats that could help the party win up to four additional seats.
Challenges: The state Supreme Court allowed the referendum to proceed, but it has yet to rule whether the effort is legal. The court is considering an appeal of a Tazewell County judge’s ruling that the amendment is invalid because lawmakers violated procedural requirements.
Florida
Current map: eight Democrats, 20 Republicans
New map: Republican Gov. Ron DeSantis announced on May 4 that he had signed revised U.S. House districts that improve the GOP’s chances of winning four additional seats.
Challenges: A court challenge contends the new map violates a state constitution provision prohibiting districts from being drawn with intent to favor or disfavor a political party.
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