Pete Buttigieg served as mayor of South Bend, Indiana from 2012 to 2020. Elected in 2011 as a Democrat, he took office in January 2012 at the age of 29, becoming the second-youngest mayor in South Bend history, and the youngest incumbent mayor, at the time, of a U.S. city with at least 100,000 residents. During his mayoralty, he acquired the nickname "Mayor Pete". Coming out as gay in 2015, Buttigieg became the first elected official in Indiana to come out while in office, as well as the highest-ranking Indiana elected official to come out. Buttigieg won reelection in 2015. Buttigieg opted against running for reelection in 2019, instead launching a campaign for the Democratic presidential nomination in the 2020 United States presidential election.