Gerrymandering: Gerrymandering is the manipulation of district boundaries for political gain. It often involves drawing strangely shaped districts that favor one political party over another.
Census: The census is an official count or survey of a population, typically conducted every ten years. It provides important data used in redrawing district lines.
Apportionment: Apportionment refers to the allocation of seats in a legislative body based on population. It determines how many representatives each state gets in Congress or other governing bodies.