America’s longest-serving House speaker is facing mounting pressure from within his own party over corruption implications in the federal case against ComEd.

Pressure is growing on the longest-serving state House speaker in American history to resign as federal investigators probe his relationships with corporate lobbyists.

Campaign finance records reveal more than 60 sitting state representatives have received nearly $15 million from the state’s most powerful politician over the course of their careers. In turn, they often give him one of the most important votes he needs to maintain power: the vote for speaker of the House.

More than 60 sitting state representatives have received money from Madigan over the course of their careers, totaling around $15 million.