Expected partisan seat shifts from newly enacted congressional maps
Updated
Note: Utah redrawn after court order. Ohio redrawn as required by statute.
Louisiana map struck down as a racial gerrymander (LA v. Callais).
Missouri’s new map was blocked by the Missouri Supreme Court on September 3, 2026,
which ordered a referendum on it for the November ballot; the 2022 map governs the 2026 election.
Struck-through values indicate maps that were blocked and are not counted in the totals.
“Backfires <” gives the drawing party’s share of the two-party vote below which
its new map would win it fewer seats than the old one (a dummymander), on average across
statewide elections; select a state for the detail.
Data: Dave’s Redistricting, VEST.
Select a shaded state for its election-by-election detail.