NLRB Stats Archive › Annual Reports › FY1951 › Union-shop authorization polls and votes cast — by participating union
Union-shop authorization polls and votes cast — by participating union
| Participating unions | Employees eligible to vote | Percent casting valid votes | Total valid votes cast | Valid votes cast for union shop by affiliation of petitioner — A.F. of L. affiliates — Number | A.F. of L. affiliates — Percent | C.I.O. affiliates — Number | C.I.O. affiliates — Percent | Unaffiliated unions — Number | Unaffiliated unions — Percent | Valid votes cast against union shop — Number | Valid votes cast against union shop — Percent | Employees in units authorizing union shop |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | 1,623,375 | 82.3 | 1,335,683 | 253,637 | 19 | 826,269 | 61.9 | 84,237 | 6.3 | 171,540 | 12.8 | 1,585,881 |
| A.F. of L. affiliates | 323,382 | 86.3 | 279,002 | 253,637 | 90.9 | 25,365 | 9.1 | 309,484 | ||||
| C.I.O. affiliates | 1,181,731 | 81 | 957,772 | 826,269 | 86.3 | 131,503 | 13.7 | 1,162,209 | ||||
| Unaffiliated unions | 118,262 | 83.6 | 98,909 | 84,237 | 85.2 | 14,672 | 114,188 |
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Source data: U.S. NLRB Annual Reports (public domain). Reconstruction by NLRB Stats Archive. Updated June 2026.