Gerrymandering uses detailed census and election data to redraw district boundaries in ways that mathematically guarantee one party wins far more seats than its statewide vote share would predict. Modern partisan gerrymandering is precise: algorithms test thousands of boundary combinations to find the map that gives the intended party maximum seats while insulating it from demographic shifts.
After the 2020 Census, detailed maps and high-speed computing made partisan gerrymandering more effective than ever. In some states, one party won supermajorities despite winning only 45% of statewide votes. Packed districts concentrate one party's voters into safe seats, "wasting" votes that exceed the margin needed to win. Cracked districts scatter opposition voters across districts where they're permanent minorities. The result: legislatures that ignore shifting public opinion because no amount of electoral swing can dislodge them.
In Rucho v. Common Cause (2019), the Supreme Court held that federal courts cannot remedy partisan gerrymandering. Chief Justice John Roberts wrote that while partisan gerrymandering harms democracy, the Constitution contains no judicially manageable standard for determining when it's unconstitutional—making it a "political question" for voters and legislatures, not courts. That left state courts and ballot initiatives as the only remedies. Some states have adopted independent redistricting commissions to remove political incentives from mapmaking.
Partisan gerrymandering allows minorities to elect majorities and majorities to become unmovable. It's a primary driver of legislative dysfunction because safe seats reward ideological extremism over compromise.
People often assume gerrymandering requires racial intent. Partisan gerrymandering is about party advantage, not race—though the tactics (packing, cracking) are identical, making the motive hard to prove.
Partisan gerrymandering allows minorities to elect majorities and majorities to become unmovable. It's a primary driver of legislative dysfunction because safe seats reward ideological extremism over compromise.
People often assume gerrymandering requires racial intent. Partisan gerrymandering is about party advantage, not race—though the tactics (packing, cracking) are identical, making the motive hard to prove.