Illinois Supreme Court Justice Mary K. O’Brien and the high court appointed Chantelle A. Porter as a circuit court judge in the 18th Judicial Circuit. Porter is the first Black woman to serve as judge in DuPage County.Porter fills the vacancy created by the election of Justice C. Liam Brennan to the 3rd District Appellate Court. The appointment took effect on Monday and will conclude Dec. 2, 2024, following the November 2024 general election.Porter was a partner at A. Traub and Associates.