Remember Citadel CEO Ken Griffin, the Illinois financial executive whose firm made a big investment in Marriott months before Chicago awarded the company a big hotel deal? Well he’s back making big Illinois investments. This time, according to records at the Illinois State Board of Elections, it is a stunning one-day $2.5 million contribution that he just made this week to the campaign of Illinois Republican gubernatorial candidate Bruce Rauner, who is also a fellow financial executive. Yes, you read that right: state records show Griffin made a $2.5 million contribution not to a national political party or a SuperPAC, but to a single candidate for a single state office. Welcome to the brave new world of Citizens United.