When politicians draw the maps, they effectively choose their own voters instead of voters choosing them.

Countries & Cities · Published 29 September 2026 Swipe more like this →

In short: Gerrymandering is the deliberate manipulation of electoral boundaries to secure partisan advantage. By packing opponents into a single district or cracking their voting power across many, parties can insulate incumbents from competition and distort democratic representation. It turns elections into a game where the outcome is decided before ballots are cast.

The term originated in 1812, when Massachusetts Governor Elbridge Gerry signed a bill creating a district so contorted it resembled a salamander. While Gerry personally disapproved of the practice, the name stuck, evolving into a shorthand for systemic corruption. Today, the practice relies on two primary mechanisms: packing and cracking. Packing concentrates opposition voters into one district to limit their influence elsewhere, while cracking spreads them thin across multiple districts to ensure they never reach a majority.

These tactics rely on the 'wasted vote' effect, where votes for a losing candidate or excess votes for a winner do not contribute to electoral success. By strategically drawing lines, a party can ensure its opponents waste their votes in lopsided districts while the incumbent party wins narrow majorities in many others. This can lead to extreme outcomes; for instance, in 2012, one party in Pennsylvania won 13 of 18 seats despite receiving fewer total votes than their opponents. In seven states that same year, Republicans won over 68% of congressional districts with only 50.4% of the vote.

The consequences extend beyond simple seat counts. Gerrymandering often reduces electoral competition, making incumbents nearly impossible to unseat. In New York, a 10-year study found that as many state legislators died in office as were defeated in elections. This lack of accountability can drive political polarization, as representatives in safe, gerrymandered districts face little pressure to moderate their views. While some argue that factors like partisan polarization are the primary drivers of gridlock, the structural impact of boundary manipulation remains a significant challenge to the principle of one person, one vote.

Reforms are often met with resistance, particularly in the United States, where beneficiaries of the current system fear losing influence. Other nations, including the United Kingdom, Australia, and Canada, have largely moved to neutralize this power by delegating boundary definitions to independent or cross-party bodies. These efforts aim to restore the descriptive function of elections, ensuring that the composition of a legislature reflects the actual preferences of the electorate rather than the strategic calculations of those in power.

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