So instead of hoping to restore unionization in the private sector it sounds like you would like it to vanish in the public sector.
I am sure you cannot support your view that equivalently qualified private-sector employees in similar positions of responsibility earn less than the same person in the private sector. It is probably true that a masters-degree history teacher in the Chicago school district makes more (~$75,000) than a sales manager at Walmart, but that teacher makes half of what the same teacher in the well-off suburb just outside of Chicago makes. Add in the fact that Social Security grants the state and municipalities a waiver so FICA taxes are not taken. This increases the teacher's salary by a few percent but excludes him or her from collecting Social Security when they begin receiving the (likely) underfunded state pension.
How about you support politicians that will protect your labor rights and not grant tax breaks for outsourcing your job, or for investing in automation to replace you? Unions are not your enemy. This is your enemy: