Uihlein has given Proft’s PAC nearly $17.6 million since the fall of 2012, with $15.4 million of that coming since January 2017. Liberty Principles PAC has raised a total of nearly $25 million since 2012, about 70 percent coming from Uihlein. In the 2016 legislative races, it got $2.3 million from a PAC funded in part by Gov. Bruce Rauner, though Rauner and Proft have had a falling out since.