Illinois government workers’ union dues fund Democratic Party campaign committees, which are now seeking to tip the presidential election outcome in swing states. That fails to align with at least 40% of members’ politics.

The Chicago Teachers Union has funneled more than $17 million to Illinois political committees since 2010, when the militant Caucus of Rank and File Educators took over leadership. Now, one of their employees is running for Chicago mayor.

Government unions in Illinois have tremendous power. Most are allowed to go on strike and can bargain over virtually anything.1 It creates an uneven playing field, with unions able to demand costly provisions in their contracts and threaten to strike – denying Illinoisans needed services – to get what they want.2 Until recently, the potential...