SPRINGFIELD — Republican Rep. Margo McDermed of Mokena, a former corporate attorney, announced last week she will not seek re-election to the House in 2020.McDermed will continue to serve through her term — which ends January 2021 — but then said plans to focus on her family and other pursuits. “It has been an honor to serve and get to know the residents of the 37th District,&rdquo …