Not all states are equal when it comes to map manipulation. Some are extreme offenders, other states are working to modify districts before the next election. State by state voters are losing their voice in growing numbers.
Hover or tap any state to see details. Heavily GerrymanderedGerrymanderedPartially Gerrymandered1 District State
Bias levels are approximate based on 2022–2024 election results vs. proportional outcomes. Sources: Princeton Gerrymandering Project, Brennan Center for Justice, The American Redistricting Project, Ballotpedia.
* California: In 2025, the state legislature voted to override the Independent Citizens Redistricting Commission and redrew congressional maps under direct legislative control, effectively ending the independent redistricting process established by Proposition 11 (2008). The new maps produced a significantly larger Democratic seat advantage relative to vote share.