CHICAGO (AP) — Illinois Gov. Pat Quinn and challenger Bruce Rauner both endorse what they call “common sense” in gun laws, but disagree over what that means.

Quinn, a Chicago Democrat running for re-election in November, has repeatedly called for a ban on assault weapons in Illinois and tried unsuccessfully to impose more safeguards in the state’s law allowing concealed carry of firearms. Rauner, a Republican businessman from Winnetka, applauded Illinois becoming the last state in the nation to approve concealed carry, and warns that too many regulations on assault weapons and other firearms can run afoul of constitutional rights.