Wyoming Sen. Mike Enzi announced on Saturday he will not seek a fifth term, declining to run for reelection in 2020, Politico reports.

Details: Enzi, a 75-year-old Republican, who was first elected to his seat in 1996, chairs the Senate Budget Committee. He will retire at the end of this term. Per Politico, the seat is expected to stay in Republican hands. The Washington Post reports he will spend the remainder of his term concentrating on budget reform.

Go deeper: These Senate seats are up for election in 2020...

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