Wisconsin Supreme Court Justice Shirley Abrahamson has announced she will not run for re-election when her fourth term is up in 2019.

Abrahamson was appointed by Democratic Gov. Patrick Lucey in 1976 as the state’s first woman Supreme Court Justice. She served as Chief Justice from 1996 to 2015. Abrahamson is the longest serving Supreme Court Justice in Wisconsin history.

So far, District Attorney Susan Happ, Appeals Court Chief Judge Lisa Neubauer, Waukesha County Judge Maria Lazar, and Second District Appeals Court Judge Brian Hagedorn have expressed interest in running for Abrahamson’s seat.