“When I ran for the Senate in 2006, I told people that I couldn’t imagine serving for more than two terms," Corker said in a statement. "Understandably, as we have gained influence, that decision has become more difficult. But I have always been drawn to the citizen legislator model, and while I realize it is not for everyone, I believe with the kind of service I provide, it is the right one for me."
Corker, the chairman of the Foreign Relations Committee, faced a potential primary challenge in 2018. He drew ire from Donald Trump after criticizing the president's performance in the wake of the Charlottesville, Virginia white supremacist protest in August.
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