Seeking to avoid the possibility that House Speaker Mike Madigan’s sore thumb, Ken Dunkin, could run for re-election to his old seat, the Illinois Democratic Party has been quietly interviewing candidates for the House’s 5th District seat. Meetings with Democratic ward committeemen began last week, and another round of meetings will be conducted Friday, Sept. 29, say insiders. After the interviews, committeemen will endorse a single candidate, but not officially slate them.