The former chairman of the Illinois State Board of Education today announced his Democratic bid for Illinois attorney general, expanding the number of prominent attorneys who are interested in succeeding incumbent Lisa M. Madigan.Drinker Biddle & Reath LLP partner Jesse H. Ruiz announced his campaign with a high-production video that framed himself as a champion of Illinois workers.“The attorney general’s job is to be the champion of hard-working people, and I will make sure everyone’s rights are …