Republican Sen. Dan Coats of Indiana will not seek another term in office, he said Tuesday.
Coats told the political news website Indy Politics that his age and his preference to legislate rather than campaign both played a role in his decision, which he told Senate leaders about Tuesday.
In a statement, Coats pledged to focus his time and energy in his remaining months in office on the "major challenges that Hoosiers sent me to Washington to address."
"This was not an easy decision," Coats said in the statement. "While I believe I am well-positioned to run a successful campaign for another six-year term, I have concluded that the time has come to pass this demanding job to the next generation of leaders."
Coats was a member of the House of Representatives from 1981 to 1989, when he became a senator. He served until 1999, when he stepped down because of a term-limit pledge he'd made to the Indiana electorate. In between two stints in the private sector, he served as ambassador to Germany. He was elected to the Senate again in 2010.
Earlier this month, Coats told Politico that he wouldn't run for a second term unless he was confident that Congress would be able to accomplish something. But in an interview with Howey Politics Indiana, he said congressional gridlock didn't factor into his decision.