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He added, Public service has and continues to drive me every day.
No Labels issued a statement praising Manchin.
Manchin faced a tough reelection battle in West Virginia, which has become more solidly Republican during his tenure.
Sen. Joe ManchinGetty Images
Manchin has been in the Senate since 2010, elected to the seat once occupied by Robert Byrd.
Manchin has served as governor of the state from 2004 to 2010.
My statement on my political future:pic.twitter.com/dz8JuXAyTL
More to come.
