Bruce Rauner, a vocal proponent of so-called school choice and frequent critic of public schools.

Source: https://chronicleillinois.com/government/senate-democrats-send-budget-to-house-setting-up-for-early-saturday-morning-vote/

That effort was later adopted by Bruce Rauner in his lone successful gubernatorial campaign and in GOP legislative campaigns he helped fund.

Source: https://www.chicagotribune.com/politics/ct-comed-four-corruption-illinois-republicans-20230505-dxctzieae5fyzk77vjh7ny2wvi-story.html