- Union membership has declined from 35% in 1954 to 10% in 2024 — but union workers remain significant electoral blocs in key Rust Belt states (Michigan, Pennsylvania, Wisconsin).
- The UAW strike of 2023 and subsequent gains (25%+ wage increases) reinvigorated union organizing — 2024 saw more successful union elections than any year since the 1970s.
- Non-union workers support the right to unionize at 71% — but only 10% are currently in a union, reflecting the gap between abstract support and the organizational and legal barriers to actual unionization.
- Labor issues have complex partisan dynamics — traditional union households have shifted toward Republicans since 2016, while unions themselves (SEIU, NEA, AFL-CIO) remain strongly Democratic in their political endorsements.
The Long Decline: From One-Third to 10%
American union membership peaked at roughly 35% of the workforce in the mid-1950s, during the post-war manufacturing boom. The decline has been continuous for seven decades, shaped by multiple forces:
- Manufacturing offshoring: Millions of unionized manufacturing jobs moved overseas from the 1970s through the 2000s, particularly to Mexico and China following NAFTA (1994) and China's WTO entry (2001). The Midwest's industrial base — once the heart of UAW and Steelworkers membership — was hollowed out.
- Right-to-work laws: The Taft-Hartley Act of 1947 allowed states to ban union security agreements, meaning workers in unionized workplaces could opt out of paying dues. As of 2026, 27 states have right-to-work laws. Michigan, a historic union stronghold, passed right-to-work in 2012 under Governor Rick Snyder and repealed it in 2023 under Governor Gretchen Whitmer — the first state to reverse right-to-work in decades.
- Service economy shift: The US economy shifted from heavily unionized manufacturing and mining toward services, retail, and gig-economy work — sectors that are structurally harder to organize and historically resistant to unionization.
- Employer opposition: Legal union-busting has expanded. Companies routinely hire specialized consultants ("union avoidance" firms), hold mandatory anti-union meetings with employees, and use legal delays to slow certification. The National Labor Relations Board process can take years before workers get a contract.
Public-sector unions (teachers, firefighters, government employees) have held up better, with 33% membership versus 6% in the private sector. But the 2018 Supreme Court decision in Janus v. AFSCME eliminated mandatory public-sector union fees, applying a form of right-to-work logic to government workers nationwide.
UAW Political Power: Michigan, Pennsylvania, Wisconsin
Despite declining overall membership, union households remain a disproportionately influential voting bloc because of their geographic concentration in competitive states and their high organizational capacity.
The United Auto Workers union is the most politically consequential single labor organization in American presidential and Senate politics:
- Michigan: Roughly 390,000 UAW members and 580,000 retirees live in Michigan, making the union central to any Democratic strategy in the state. Michigan's three competitive congressional districts (MI-07, MI-08, MI-10) all contain significant union household concentrations. The 2024 Senate majority between Democrat Elissa Slotkin and Republican Mike Rogers saw UAW endorsement as a central campaign asset for Slotkin.
- Pennsylvania: The Philadelphia suburbs have seen union decline, but western Pennsylvania — the Pittsburgh metro, Erie, and the Mon Valley — retains a significant base of UAW, Steelworkers, and SEIU households. Pennsylvania's competitive Senate race in 2026 (Bob Casey lost in 2024; the seat is now Republican) does not feature union issues directly, but House races in PA-07, PA-08, and PA-17 are all in union-dense regions.
- Wisconsin: Wisconsin's manufacturing base in the Fox Valley and Milwaukee metro includes significant UAW and Machinists union membership. The state's narrow partisan margins — Biden won by 0.6 points in 2020, Trump won by 0.9 points in 2024 — mean union household turnout is mathematically decisive. Senator Tammy Baldwin (D) won re-election in 2024 with strong union household margins.
Political scientists at the University of Wisconsin have estimated that union household turnout operations in Wisconsin and Michigan are worth 3-4 percentage points in closely contested statewide races. Given that recent Wisconsin presidential margins have been under 1 point, union political operations are among the decisive factors in outcomes.
What Americans Support: The Polling
Labor polling shows a consistent pro-worker, pro-union favorability that runs significantly ahead of actual union membership rates — a structural gap that shapes both parties' messaging.
Sources: Gallup 2024, Pew Research Center 2023–2024, AFL-CIO polling. Note: PRO Act support varies by question framing; support is highest when individual provisions are described without the bill name.
The PRO Act: Stalled but Politically Alive
The Protecting the Right to Organize Act passed the House in March 2021 on a largely party-line vote (225-206) but died in the Senate, where it could not overcome the 60-vote filibuster threshold. Under the current Senate composition, the PRO Act has no path to passage.
Key provisions and why they matter politically:
- Ban on permanent replacement of strikers: Under current law (rooted in a 1938 Supreme Court ruling), employers can permanently replace workers who go on strike. This is one of the most significant legal asymmetries between US and European labor law. The PRO Act would prohibit it.
- Mandatory anti-union meeting prohibition: Employers currently can and routinely do require employees to attend meetings where management argues against unionization. These are called "captive audience" meetings. Several states (including Oregon and New York) have enacted their own bans; the PRO Act would do so federally.
- Secondary boycott rights: The Taft-Hartley Act of 1947 made it illegal for unions to call boycotts of companies that do business with an employer involved in a labor dispute (secondary boycotts). The PRO Act would restore this right, significantly expanding union economic leverage.
- ABC test for independent contractors: A large category of gig economy workers (delivery drivers, rideshare drivers, freelancers) are classified as independent contractors and thus have no right to organize. The PRO Act would apply the "ABC test" — making it significantly harder for companies to classify workers as contractors — affecting millions of workers at companies like Uber, Lyft, DoorDash, and Amazon Flex.
Right-to-work laws, which exist in 27 states, are not directly addressed by the PRO Act but remain a parallel flashpoint. Michigan's 2023 repeal of its 2012 right-to-work law — the first state to reverse such a law in the modern era — was a significant symbolic victory for organized labor.
AI and Automation: The Next Labor Disruption
The 2023 UAW contract negotiations with Ford, General Motors, and Stellantis were notable not only for the record wage gains (25% increases over four years) but for what the UAW demanded and largely did not get: protections against automation and AI-driven job displacement at planned electric vehicle battery plants.
The automation threat to blue-collar work operates on two timelines:
- Near-term (2024-2030) — EVs and manufacturing restructuring: Electric vehicles have significantly fewer components and assembly steps than internal combustion engine vehicles. EV drivetrain assembly requires roughly 30-40% fewer labor hours. Battery manufacturing is highly automated from the start. The transition to EVs is projected to eliminate 75,000-100,000 US auto manufacturing jobs by 2030 even before any AI-specific automation is applied.
- Medium-term (2025-2035) — AI in logistics, warehousing, transportation: Amazon's warehouse automation, autonomous trucking development (Waymo, Aurora, TuSimple), and AI-assisted scheduling systems are projected to significantly reduce employment in logistics and trucking. The American Trucking Associations counts 3.5 million truck drivers; fully autonomous freight would displace the majority over 10-15 years.
- White-collar exposure: Goldman Sachs' 2023 AI analysis found that white-collar administrative and legal support roles face the highest near-term automation exposure — an unexpected reversal of the traditional pattern where automation first affected blue-collar repetitive tasks.
Labor unions have responded by pushing for "technology clauses" in contracts that require advance notice and bargaining before automation is deployed. The Writers Guild of America's 2023 strike secured some of the first AI protections in any major US union contract.
Gig Economy: 59 Million Workers in a Legal Gray Zone
Approximately 59 million Americans — roughly 36% of the workforce — participate in the gig economy in some capacity, according to Upwork and Gallup surveys. This includes Uber and Lyft drivers, DoorDash and Instacart couriers, freelance designers, TaskRabbit workers, and remote contractors. Many do gig work as a primary income source rather than a supplement.
The core legal issue: gig workers classified as "independent contractors" have no right to unionize, receive no employer-paid benefits (health insurance, retirement, paid leave), face limited worker compensation protections, and must pay both halves of Social Security and Medicare payroll taxes. 62% of Americans say gig workers should have the same benefits and protections as traditional employees. This is not a partisan position — it reflects broad recognition that the gig economy's growth has created a new category of vulnerable worker.
California's AB5 (2019) was the most aggressive attempt to reclassify gig workers as employees, applying the ABC test that makes independent contractor classification much harder. Uber and Lyft spent over $200 million to pass Proposition 22 in 2020, which exempted them from AB5 and created a lower standard for their workers. The PRO Act's ABC test provisions would apply similar logic nationally. The Trump administration's approach — rolling back Biden-era NLRB guidance on worker classification — keeps more workers in contractor status, limiting their legal rights.
The minimum wage dimension intersects with gig work: gig workers are exempt from federal minimum wage requirements as contractors. In markets where platform companies have dominant pricing power, contractors can and do earn below minimum wage on a per-hour basis after accounting for vehicle wear and wait time. 65% of Americans support raising the federal minimum wage to $15 — the current rate of $7.25 has not been increased since 2009.
2026 Electoral Dynamics
Labor issues intersect with the 2026 midterms through several concrete mechanisms:
- UAW endorsement calendar: The UAW typically makes congressional endorsements 6-8 months before general elections. In 2026, UAW endorsement decisions in Michigan House races (particularly MI-07 and MI-10, both competitive) and any open Wisconsin seats will be closely tracked. The UAW broke with its traditional reluctance to oppose incumbents when it publicly called out members of Congress who voted against EV funding.
- Battleground state concentration: Of the 20 most competitive House seats in 2026 projections, 11 are in states with above-average union household density: Michigan, Pennsylvania, Wisconsin, Ohio, and Minnesota. This gives labor organizations outsized structural leverage in exactly the races that will determine the House majority.
- The favorability-membership gap: The fact that 65% of Americans view unions favorably while only 10% belong to one creates a political opportunity for candidates who frame labor issues in terms of worker dignity and economic fairness rather than institutional union politics. Polling shows "right to organize" messaging polls better with non-union swing voters than explicit "union" framing.
- Trump and trade: The Trump administration's tariff policies in 2025-2026 — including steel and aluminum tariffs and automotive import tariffs — are framed as pro-worker policies. The UAW and Steelworkers have given qualified support to tariffs protecting domestic manufacturing while opposing Trump's broader labor agenda (including NLRB weakening). This splits traditional union political alignments and creates genuinely competitive appeals to union households from both parties.
- NLRB under Trump: The Trump administration moved to weaken the National Labor Relations Board through budget cuts and board appointments. Several high-profile NLRB rulings favorable to workers (including at Amazon and Starbucks) have been challenged. Reduced NLRB enforcement capacity will slow union organizing campaigns in 2026, a tangible policy impact that organized labor will use in mobilization messaging.
Frequently Asked Questions
What percentage of American workers are in unions?
As of 2024, 10.1% of wage and salary workers are union members, according to the Bureau of Labor Statistics — a historic low. Public-sector union membership (33%) is far higher than private-sector (6%). In the 1950s, roughly one-third of the workforce was unionized. Despite declining membership, 65% of Americans view unions favorably (Gallup 2023), the highest since 1965.
What is the PRO Act and why is it blocked?
The Protecting the Right to Organize Act passed the House in 2021 but cannot clear the 60-vote Senate filibuster threshold. It would ban mandatory anti-union meetings, prohibit permanent striker replacement, restore secondary boycott rights, and make it harder to classify workers as independent contractors. Polling shows 58% support when its provisions are described. It has no path to passage under the current Senate composition.
How does the UAW endorsement affect elections?
The UAW has roughly 400,000 active members and 580,000 retirees concentrated in Michigan, Ohio, Pennsylvania, and Wisconsin. Political scientists estimate UAW turnout operations shift vote margins 3-5 points in competitive races. Michigan and Wisconsin presidential margins in 2024 were under 1 percentage point, making union household mobilization mathematically decisive. UAW endorsement decisions in 2026 congressional races will be among the most watched labor-political signals of the cycle.
How is AI affecting American workers?
AI and automation threaten significant displacement across manufacturing, logistics, and administrative roles. The EV transition alone is projected to eliminate 75,000-100,000 US auto manufacturing jobs by 2030. Goldman Sachs estimates AI could automate tasks equivalent to 300 million full-time jobs globally. Pew Research found 62% of Americans are worried about automation eliminating their jobs. Unions have begun demanding AI protection clauses in contracts; the WGA secured some of the first such provisions in 2023.