Daniel Ray Coats is an American politician, attorney, and diplomat. From 2017 to 2019, he served as the Director of National Intelligence in the Trump administration. A member of the Republican Party, he served as a United States Senator from Indiana from 1989 to 1999 and again from 2011 to 2017. He was the United States Ambassador to Germany from 2001 to 2005, and a member of the United States House of Representatives from 1981 to 1989. Coats served on the United States Senate Select Committee on Intelligence while in the U.S. Senate.

The 2010 United States Senate election in Indiana took place on November 2, 2010, alongside 33 other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections to fill Indiana's class III United States Senate seat. Incumbent Democratic Senator Evan Bayh decided in February 2010 to retire instead of seeking a third term shortly after Dan Coats announced his candidacy. Bayh's announcement came one day before the filing deadline and no Democratic candidate submitted enough signatures by the deadline to run, so the State Democratic Party chose U.S. Congressman Brad Ellsworth as their nominee. The Libertarian Party nominated YMCA instructor Rebecca Sink-Burris, who had previously unsuccessfully run for this seat in 1998. Coats won the open seat; having previously held it from 1989 to 1999. Bayh later unsuccessfully ran for this seat again in 2016.