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Mid-Decade Redistricting Gives Nine States New Congressional Maps for 2026 Midterms
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New Maps Adopted in Nine States
Following President Donald Trump’s push for a mid-decade redrawing of House districts, new congressional boundaries are now in effect for the 2026 midterm elections in Alabama, California, Florida, Louisiana, North Carolina, Ohio, Tennessee, Texas and Utah. All of the new maps favor Republicans except those in California and Utah, where the revised lines could benefit Democrats.
Supreme Court Ruling Ends Missouri Dispute
A recent U.S. Supreme Court decision rejected three attempts by Missouri to use a new Republican-drawn map for the November election, affirming the Missouri Supreme Court’s position that the map could not be used again without voter approval in a November referendum. Federal lower courts had previously ruled that switching districts after a primary violated the Constitution, creating confusion for voters.
Scale of Voter Realignment
An Associated Press estimate indicates that roughly one-in-ten potential voters nationwide will be in a different congressional district in November than they were in the 2024 elections. The shift affects more than 6.9 million voters in Texas, over 6.3 million in California and more than 4.5 million in Florida. In Utah, about 69 % of potential voters have new district numbers due to a state-court decision.
Political Implications
Analysts note that if the new districts function as designed, Republicans could gain up to nine additional House seats. However, a strong Democratic performance in the midterms could reduce that projected net gain. The redistricting also triggered ripple effects: in Tennessee, Republican-led changes to the Democratic-held 9th District in Memphis produced even larger population shifts in the 5th District, resulting in new boundaries for seven of the state’s nine districts.
Prospects for Further Redistricting
The battles are not over. November ballot measures in Maryland and Missouri could authorize new maps ahead of the 2028 presidential election. Lawmakers in Mississippi and New York are already advancing redistricting proposals, and several states that failed to adopt new maps this year—including Georgia, Indiana, South Carolina and Virginia—may revisit the process. Additionally, outcomes of the November state legislative and gubernatorial races could open further opportunities for partisan gerrymandering in states such as Minnesota, Pennsylvania and Wisconsin.