Chicago’s longest-serving alderman, the “ComEd Four” and a collection of public servants in some of the highest-profile corruption cases in decades.

The four top lobbyists and executives at the state’s largest electric utility were convicted May 2 for their involvement in a multi-year scheme to funnel $1.3 million in jobs, contracts and payments to sway the former Illinois House Speaker.

The ComEd 4 corruption trial proves concentrated power breeds corruption. The fix? Reform the rules former Illinois House Speaker Mike Madigan crafted to concentrate all that power.

Emails between indicted former employees of ComEd show hiring at the company was based on what Illinois House Speaker Mike Madigan wanted.

Madigan already had lost enough support to end his 35-year run as House speaker, but the gap continued to widen as Illinois’ governor added his rebuke.

The indictments are the closest yet to Illinois House Speaker Mike Madigan’s inner circle. Now enough Democrats are pledging they won’t support him to cost him the speaker’s gavel.

After decades under Illinois House Speaker Michael Madigan’s rule, Illinois is corroding from his concentration of power. Robust ethics laws, rules and norms could stop a new Madigan from rising.

Illinois House Speaker Michael Madigan is at the center of a federal bribery investigation into Commonwealth Edison.

The sweeping federal corruption investigation threatens to derail Gov. J.B. Pritzker’s progressive tax hike amendment, which voters will decide Nov. 3.

Government corruption is nothing new for Illinoisans. Illinois is the second-most corrupt state in the nation, according to research by the University of Illinois-Chicago. And corruption costs the state economy more than $550 million per year. What is new? Powerful Illinois lawmakers, Chicago aldermen, local mayors and business interests are involved in what appears to be...