Senate Minority Leader Harry Reid (D-Nev.) March 27 said he would not seek reelection in 2016, a decision that upends the hierarchy in the Senate Democratic Caucus and brings to a close a nearly three decade run in the Senate. Reid, who spent the last 10 years of his career as either the Democratic Majority or Minority Leader, also previously chaired the Senate Environment & Public Works Committee. Has been a supporter of transportation infrastructure investment throughout his tenure in Congress.

Reid said the decision had nothing to do with the eye injury he suffered in January, however, the accident forced him to “have a little down time” and to think. “We’ve got to be more concerned about the country, the Senate, the state of Nevada, than us. And as a result of that, I’m not going to run for reelection,” Reid said in a farewell video.

Reid’s pending departure opens up the top Democratic leadership position in the Senate. Early reports have New York Sen. Chuck Schumer, whom Reid has already endorsed to be his replacement, as the favorite for the top job for the Democrats, though Sen. Minority Whip Dick Durbin of Illinois is a potential contender, as is Washington Sen. Patty Murray.