Reapportionment

The process of redistributing the number of seats in the House of Representatives to the states based on population changes revealed by the census, after which redistricting can begin. The number of voting seats in the House was set by law at 435 in 1929, and the Commerce Department uses a mathematical formula to apportion them based on the total resident population of the 50 states – citizens and noncitizens. Each state is guaranteed at least one seat.

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