Pritzker’s money could offer Madigan’s House members cover should they dare to go against the speaker.

Voters in DuPage County Nov. 6 will give their opinions on a vehicle miles tax, a policy gubernatorial candidate J.B. Pritzker and Illinois Senate President John Cullerton have entertained.

While J.B. Pritzker has not released a detailed tax plan of his own, reasonable cost estimates suggest the tax hike required to pay for the candidate’s spending promises would require doubling Illinois’ state income tax rate and cost the state an estimated 132,000 jobs and $31.3 billion in forgone GDP.

Illinois taxpayers are fed up and overtaxed. Residents have little faith that their governments are spending their tax dollars well – and for good reason. The state’s most recent spending plan is out of balance by as much as $1.5 billion, and includes $54.2 million in wasteful spending and $27 million in pork-barrel spending. The...