Aurora Mayor Richard Irvin emphasized crime, corruption and the economy in his gubernatorial campaign launch video on Monday. [YouTube/Irvin & Bourne for Illinois]

Aurora Mayor Richard Irvin became the latest candidate on Monday to jump into the Republican race to unseat Gov. JB Pritzker. But even with the promise of heavy backing from billionaire mega-donor Ken Griffin, Illinois Democrats and even many Republicans are making it clear his path to the governor’s mansion will be anything but smooth.