The 2018 United States Senate election in Indiana took place on November 6, 2018, along with other elections to the United States Senate and House of Representatives and various state and local elections. Incumbent Democratic U.S. Senator Joe Donnelly sought reelection to a second term, facing Republican businessman and former state representative Mike Braun and Libertarian Party nominee Lucy Brenton. In 2017, Politico described the race as "possibly the GOP's best opportunity to seize a Senate seat from Democrats" in the 2018 elections. The primary election was held on May 8, 2018. In October 2018, RealClearPolitics rated the race a toss-up between the Democratic and Republican nominees, with the Libertarian receiving a poll average of 6%. Braun defeated Donnelly in the general election b