Hillary ClintonHillary Diane Rodham ClintonCruz: Wife 'pretty pissed' about leaked Cancun texts CBC would back Young for OMB if Tanden falls Hillary Clinton to co-write political thriller MORE will speak at a medical technology industry conference in Chicago the same day that she campaigns for Illinois Gov. Pat Quinn (D). 

The Chicago Sun-Times reported that Clinton will campaign for Quinn on Oct. 8. That is the same day that she has a previously scheduled appearance at the AdvaMed 2014 conference.

The medical decive tax under ObamaCare has been controversial, and Republicans have made repealing it a central part of their platform for next year.

The former secretary of State is often compensated for appearances at conferences such as these and has faced criticism for her speaking fees. 

Details of Clinton's campaign appearance for Quinn have not been made public. Quinn is also slated to speak at the medical technology conference. 

Clinton will hold a moderated Q&A with the president of Advanced Medical Technology Association, Stephen Ubl, after her speech, according to a media advisory released Tuesday.  

"More than 2,500 attendees will network, conduct business, gain access to capital and share insights in Chicago, Ill.,from October 6-8" the advisory says of the conference. "The conference also features world-class plenary speakers, networking and business development opportunities."

Chicago Mayor Rahm Emanuel is also slated to speak at the conference. 

On the campaign side, Quinn is locked in a tight battle with Republican businessman Bruce Rauner in his reelection race this year.