Research ReportCRS ReportVersion 20
R41545
Congressional Careers: Service Tenure and Patterns of Member Service, 1789-2025
Published Jan 22, 2025Updated Jun 21, 2025
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What this is
The Congressional Research Service is a nonpartisan policy and legal analysis arm of the Library of Congress. CRS reports are written for members of Congress and their staff, not the public — but they’re made available openly through Congress.gov.