The periodic redrawing of electoral district boundaries is a process undertaken by states, usually after the decennial census, to reflect population changes. This realignment ensures that each district contains roughly the same number of people, upholding the principle of “one person, one vote.” For example, if a state’s urban areas have grown significantly while its rural areas have shrunk, the boundaries of congressional and state legislative districts must be adjusted to reflect this demographic shift.
This adjustment is vital for fair representation and preventing vote dilution. Without it, some districts would have far more residents than others, giving individual voters in smaller districts disproportionately more influence. Historically, this process has been subject to political maneuvering, with the party in power often attempting to draw district lines to favor their candidates, a practice known as gerrymandering. The consequences of gerrymandering can skew electoral outcomes and reduce the competitiveness of elections.