Explain how often congress reapportion its membership and how such reapportionment can affect the reelection of incumbent members of congress

By laws of the U.S. Constitution, the federal government is required to carry on a census every 10 years that calculates how many people are currently living in each state. Occasionally, as the population goes up or down in certain states, a reapportionment of U.S. House seats must be done in order to adjust to the changes.

Re-election rates for incumbent members of the congress has always been extremely high. Historically, it has rarely gone down 90%. However, for States that experience slow growth or rapid loss of population, the threat of losing seats becomes an actual concern for congress members.

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