Schumer chaired the Democratic Senatorial Campaign Committee from 2005 to 2009, overseeing 14 Democratic gains in the Senate in the 2006 and 2008 elections. He was the third-ranking Democrat in the Senate, behind Senate Majority Leader Harry Reid and Majority Whip Dick Durbin. He served as Vice Chair of the Democratic Caucus in the Senate from 2007 to 2017 and chaired the Senate Democratic Policy Committee from 2011 to 2017. Schumer won his fourth term in the Senate in 2016 and was then unanimously elected Democratic leader to succeed Harry Reid, who was retiring. In January 2021, Schumer became Senate Majority Leader, and the first Jewish leader of either chamber of Congress.