Every ten years, following the census, America engages in a ritual that is equal parts democratic necessity and political bloodsport: the redrawing of congressional district lines. In theory, redistricting is a straightforward demographic exercise. In practice, it is the most consequential political act in American democracy, one that can predetermine election outcomes for an entire decade and effectively disenfranchise millions of voters without anyone casting a ballot.

The Agonists' data team has spent four months analyzing every congressional district map drawn since the 2020 census, using advanced statistical methods including efficiency gap analysis, mean-median comparisons, and partisan symmetry metrics. Our findings reveal a redistricting cycle that has been, by every measurable standard, the most aggressively gerrymandered in modern American history.

The Numbers: A Decade of Predetermined Outcomes

Of the 435 congressional districts in the current map, our analysis identifies 47 that meet the statistical definition of extreme partisan gerrymander, meaning that their boundaries were drawn in ways that produce partisan outcomes so skewed that they could not plausibly have occurred through any neutral or good-faith redistricting process. These 47 districts span 18 states and affect approximately 36 million Americans.

The breakdown is revealing: 26 of the 47 extreme gerrymanders favor Republicans, while 21 favor Democrats. Both parties gerrymander when they have the opportunity, but the Republican advantage in state legislative control means they controlled the map-drawing process in states representing 187 congressional districts, compared to 75 districts controlled by Democrats.

  • Texas: The most aggressively gerrymandered state, with 8 of its 38 districts meeting the extreme gerrymander threshold. The map was drawn to protect 25 Republican seats in a state where Republicans received 52.3% of the statewide vote.
  • New York: Democrats drew a map so aggressive that the state Supreme Court struck it down, the second time in two redistricting cycles that a New York map has been overturned by courts.
  • Ohio: Despite a constitutional amendment requiring bipartisan map-drawing, the Republican-controlled redistricting commission approved maps that a panel of federal judges described as "the most extreme gerrymander in the state's history."
  • North Carolina: After court-ordered redrawing, the current map still produces a 10-4 Republican seat advantage in a state that routinely splits 50-50 in statewide races.

The Technology Arms Race

What distinguishes this redistricting cycle from previous ones is the extraordinary precision of modern gerrymandering technology. Map-drawers now have access to voter databases that include not only party registration and voting history, but consumer data, social media activity, and even subscription preferences that serve as proxies for political ideology. Combined with computing power that can evaluate millions of possible district configurations in minutes, the result is maps drawn with surgical precision.

"In the 1990s, we drew maps with magic markers on paper maps. Today, we can draw a line that splits a neighborhood, a church congregation, or even an apartment building to achieve a specific partisan outcome. The technology has made gerrymandering a science rather than an art." -- Former state legislative staffer who worked on redistricting in three states

The Human Cost

The statistics tell only part of the story. In gerrymandered districts, the real election is the primary, not the general. This pushes candidates toward ideological extremes, because they need to win their party's base voters rather than appeal to the broader electorate. The result is a Congress populated by members who have no electoral incentive to compromise, moderate, or listen to constituents who do not share their party affiliation.

Our analysis found that in the 47 extreme gerrymander districts, the average margin of victory in general elections is 28 points. In these districts, voters of the minority party are effectively disenfranchised. Their votes count, in the narrowest technical sense, but they have no meaningful chance of affecting the outcome.

The Reform Landscape

The most promising reform movement is the push for independent redistricting commissions. Currently, 10 states use some form of independent or bipartisan commission to draw congressional maps. In every state where commissions have been implemented, the resulting maps score significantly better on partisan fairness metrics than maps drawn by state legislatures.

The challenge is political: asking legislators to give up the power to draw their own districts is like asking foxes to redesign the henhouse. Nevertheless, ballot initiatives in several states, including Ohio, Michigan, and Virginia, have succeeded in establishing commissions over legislative opposition, suggesting that public demand for fair maps can overcome institutional resistance.

Until redistricting reform reaches the states where gerrymandering is most extreme, millions of Americans will continue to live in districts where the outcome is decided before the campaign even begins. In a democracy, that is not just a political problem. It is a moral one.

David Wasserman is The Agonists' elections analyst and creator of the Redistricting Fairness Index. He has tracked congressional elections for 18 years.