What Is Gerrymandering

Cracking divides opposition voters across multiple districts, preventing them from forming majorities anywhere. If Party A supporters are 40% statewide, cracking can spread them so they're 45% in many districts—losing each one. Packing concentrates opposition voters into few districts that they win overwhelmingly (80-90%), wasting votes beyond what's needed to win. The remaining districts then favor the party drawing the maps. Both tactics maximize 'wasted votes' for opponents while minimizing your own. Modern gerrymandering uses sophisticated algorithms analyzing voter data precinct-by-precinct, creating bizarrely shaped districts that snake through neighborhoods to capture or exclude specific demographics. Metrics like the 'efficiency gap' quantify how many more votes one party wastes than the other, identifying partisan distortion.

Racial gerrymandering (diluting minority voting power) is illegal under the Voting Rights Act—district lines can't intentionally discriminate based on race. Courts apply strict scrutiny, demanding compelling justifications. However, partisan gerrymandering (favoring Republicans or Democrats) is largely legal—a 2019 Supreme Court ruling held it's a 'political question' for legislatures, not courts, absent constitutional violations. This creates a paradox: race and party often correlate; maps can achieve partisan goals while claiming race-neutral motives. Some states have independent redistricting commissions to reduce partisan bias, but most redistricting is controlled by state legislatures. The party controlling redistricting after the decennial census gains massive advantage for the following decade.

Gerrymandering creates 'safe seats' where general elections are non-competitive—primaries become decisive, incentivizing extreme positions to appeal to party bases rather than median voters. This exacerbates polarization. It can create 'representation inversion' where one party wins fewer statewide votes but more legislative seats. Minority party voters become discouraged, reducing turnout. Geographic clustering (liberals in cities, conservatives in rural areas) enables natural gerrymandering even with neutral mapmaking. However, extreme gerrymandering can backfire: packing too many opponents wastes your own votes; cracking opponents too thinly risks losing when turnout surges. Courts sometimes strike down particularly egregious maps under state constitutions or as 'racial' proxies.

Myth: All weird-shaped districts are gerrymandered. Reality: Geography, community boundaries, and compactness requirements create complex shapes; not all are partisan manipulation. Myth: Independent commissions fully solve gerrymandering. Reality: They reduce it but commissioners can have biases, and geographic clustering still affects outcomes. Myth: Gerrymandering determines election results. Reality: It creates bias but can be overcome by large vote swings; wave elections break gerrymanders. Myth: Both parties gerrymander equally. Reality: Asymmetry exists; whichever party controls more state legislatures gerrymanders more that cycle. Myth: Gerrymandering is a new problem. Reality: The term dates to 1812 (Governor Gerry); it's as old as representative democracy.