Redrawing congressional district boundaries (redistricting) can change the partisan composition and electoral competitiveness of a district.
November 13, 2025
high
temporal
Describes the durable effect of boundary changes on partisan balance and competitiveness.
Redrawing congressional district boundaries can be designed to create additional districts that favor one political party, thereby increasing the number of party-leaning seats.
high
outcome
Describes a common objective and potential effect of partisan map-drawing.
Mid-cycle redistricting refers to attempts to redraw congressional district boundaries outside the regular decennial (post-census) redistricting cycle.
high
definition
Defines the term used when redistricting is pursued between scheduled, census-driven cycles.