When a single political party controls a state's governorship and both legislative chambers, that party has the institutional ability to enact redistricting that can change congressional district boundaries and potentially alter the number of seats held by each party.
November 21, 2025
high
temporal
Summarizes the institutional conditions under which state-level actors can implement redistricting outcomes.
Redistricting is intended to adjust electoral district boundaries to reflect population changes, rather than to serve primarily as a political tool to increase a party's majority.
November 14, 2025
high
temporal
Describes the normative purpose of redistricting versus its use as partisan gerrymandering.
Redistricting of congressional district boundaries can influence which political party controls the U.S. House of Representatives.
November 04, 2025
high
temporal
General principle about the political effect of congressional redistricting referenced in coverage of the 2025 California ballot measure.
Redistricting can alter political representation by combining geographically and politically distinct areas, a practice commonly described as gerrymandering.
November 04, 2025
high
descriptive
Such map changes can affect partisan balance and the electoral power of different voter groups.
Redistricting outcomes can change the partisan balance of U.S. House seats and thereby influence which political party controls the U.S. House of Representatives.
October 06, 2025
high
temporal
Impact of redistricting on national partisan control of the House.
Redistricting of legislative and congressional districts in the United States is typically conducted after each decennial census.
January 01, 2020
high
temporal
Standard timing for redrawing electoral district boundaries in the U.S.
Redrawing congressional district lines (redistricting) can change the number of seats held by each political party in a state's congressional delegation.
high
descriptive
Explains a typical political effect of redistricting on representation.