When Lines Become Levers: The Modern Tale of District Design

In the United States, drawing lines on a map can decide who wins elections. This practice has been around for more than two hundred years. It began with a governor who signed a bill that made one party’s chances better than the other’s. The map looked oddly shaped, like a salamander, and people started calling it “gerrymandering. ” Today the same idea is used everywhere. Every ten years, after a census, states must redraw congressional districts so each one has roughly the same number of voters. But some states can change maps more often, giving politicians extra chances to shape outcomes. When a single party controls the legislature and the governor’s office, it can draw districts that help its own candidates. One trick is to spread the other party’s voters across many districts, so they never win a seat. Another trick is to pack the other party’s voters into just a few districts, letting the controlling party win the rest.The U. S. Constitution does not forbid this. In 2019, the Supreme Court said it could not decide if a map is too biased for one party. The court left the question to state courts, but many states say they cannot decide either. The stakes are high. The 2024 elections gave the Republicans a small lead in the House of Representatives. To keep that advantage, President Trump encouraged Texas lawmakers to redraw districts for Republicans. Meanwhile, California Democrats redrew their own maps to win more seats. These moves pushed other states to rethink their boundaries, hoping for a better chance in future elections. Researchers have tried to measure how much advantage gerrymandering gives a party. They use data from the 2010 census and find that Republicans, who control more redistricting processes, gained a larger edge than in the past fifty years. The practice is controversial because it can make elections less fair. People debate whether new rules or independent commissions could stop the manipulation of lines for political gain.