Columbus Mayor Michael Coleman announced Tuesday that he would not seek a fifth term in office. The Democrat became the longest-serving mayor in city history in January, and has received praise over the last 15 years for his efforts in Columbus’ growth and renovation projects. WBNS-TV posted this video to their website of Tuesday’s press conference.

Coleman was born in Indiana, but grew up in Ohio, graduating from the University of Cincinnati and the University of Dayton. His first public office position came on the Columbus City Council, where he served from 1992 to 1999. He was Lee Fisher’s running mate on the Democratic ticket for the 1998 Ohio gubernatorial race, which Republicans Bob Taft & Maureen O’Connor won. Coleman first won election to the mayor’s office in 1999, defeating Republican Dorothy Teater and succeeding Greg Lashutka. Coleman was a candidate for governor in the 2006 election cycle, but withdrew in November 2005.

Coleman did not announce his plans for the future, which may include running for U.S. Senate against Rob Portman in two years. He intends to serve out the remainder of his term, one of his projects being a pitch to bring the 2016 Democratic National Convention to Columbus. Meanwhile, there is speculation that Zach Scott, who has served as Franklin County Sheriff since 2011, will announce a candidacy to succeed Coleman soon.

The next mayoral election for Columbus is in 2015.