Winning more often means taking greater risks in modern politics. Texas Republicans have put that principle to the test by redrawing the congressional map ahead of the 2026 midterm elections, in hopes of securing additional seats in the U.S. House of Representatives. This strategy relies on a dangerous assumption. In trying to expand their electoral advantage, Republicans may also be making themselves more vulnerable to changing voting patterns. Part of the strategy remains on the significant Republican gains among Hispanic voters in the 2024 presidential election. Yet, as a Brookings analysis suggests, those gains may not directly imply advantage for future congressional races.
Could a map designed to strengthen Republican representation ultimately undermine it?
In the United States, congressional districts are often redrawn every ten years following the national census to reflect changes in population. However, Texas unusually redrew its map in the middle of the decade. In July 2025, Republican Governor Greg Abbott convened a legislative session to consider redistricting. Lawmakers passed House Bill 4, and Abbott signed it on August 29. This law replaced the boundaries of the 38 Texas congressional districts ahead of the 2026 midterms. The new map is known as PlanC2333, which relies on gerrymandering, where the party in power manipulates electoral boundaries to favour one political party. Two common techniques are packing, which concentrates the other party’s voters, and cracking, which spreads them across districts to reduce their chances of electing representatives from their preferred party. In Texas, Republicans targeted five previously Democrat-held districts: two around Houston and Dallas and three in South Texas, which relied more heavily on Republican gains during presidential elections among Hispanic voters.
However, redrawing electoral boundaries for a particular party raises questions about the limits of legislative power. In 2019, the U.S. Supreme Court ruled that claims of partisan gerrymandering could not be decided by federal courts. Racial gerrymandering remains subject to constitutional restrictions and the Voting Rights Act of 1965. Its Section 2 prohibits electoral practices that discriminate against minority groups, which includes district maps that weaken their overall voting power. Texas's new map consequently faced legal challenges, with civil rights organisations claiming that the revised boundaries unlawfully discriminate against minorities. A federal court temporarily blocked the new map in November 2025, but the Supreme Court reversed that preliminary decision in April 2026, which allows the new boundaries to be valid for the midterms.
Beyond the courtroom, the map’s efficiency depends on how voters will behave. According to a Brookings analysis, Donald Trump received approximately 55% of the Latino vote in Texas in the 2024 presidential election, compared with around 50% for Republican Senate candidate Ted Cruz. Although both candidates led among these voters, this difference illustrates why presidential results cannot directly be used to predict congressional voting patterns.
The risks of this strategy are more visible in Texas’s 15th Congressional District. Republican Representative Monica De La Cruz won re-election in 2024 with approximately 57% of the vote. However, under the new map, only around two-fifths of her constituents remain in the district. Her Democratic opponent, Tejano Bobby Pulido, has also introduced a different electoral dynamic. A September 2026 Reuters investigation reported that an August poll placed Pulido five percentage points ahead of De La Cruz, although some election analysts continue to consider the district as leaning toward Republicans.
District 15 shows how this could backfire. It illustrates the possibility of dummymandering, a term from Bernard Grofman and Thomas Brunell to describe redistricting that ends up hurting the party responsible for it. However, failing to secure the five additional seats would not necessarily represent a dummymander. For the strategy to backfire, Republicans would need to perform worse than they would have under the previous boundaries. The results of the November elections will therefore provide a test of the assumptions underlying Texas’s new map, although they cannot establish with certainty what would have happened if they kept the previous districting.
Beyond its consequences, this controversy raises a broader policy question about who should be able to control congressional redistricting. States can adopt different approaches: legislative redistricting, where elected lawmakers draw and approve district maps; independent commissions, where citizens or appointed members make decisions independently from the legislature; or bipartisan commissions, which involve representatives from different political parties. These differ in how much direct control elected officials have over the final boundaries. While Texas gave this responsibility to its state legislature, other states use independent or bipartisan commissions to draw the new boundaries, which reduces direct partisan influence. Another policy approach is to restrict redistricting between census cycles, except when it’s required by the court. The National Conference of State Legislatures documents the different institutional approaches adopted in the U.S. Texas’s experience shows how these rules shape not only the electoral competition but also the incentives facing lawmakers who draw the districts in which they compete.
Whether Texas’s new congressional map strengthens or weakens Republican representation remains uncertain ahead of the 2026 midterms. Legislators control the lines, but they can’t control the voters. A map built on today’s voting patterns can fall apart quickly when those patterns shift, which they often do. So the overall lesson of PlanC2333 may be that redistricting has limits. Lines on a map cannot guarantee seats for long.
Edited by Eavan Kallis