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Leading Union Political Campaign Contributors
1990-2010 |
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Democrats
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Republicans
|
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American Fed. of State, County, & Municipal Employees
|
$40,281,900
|
$547,700
|
|
|
Intel Brotherhood of Electrical Workers
|
29,705,600
|
679,000
|
|
|
National Education Association
|
27,679,300
|
2,005,200
|
|
|
Service Employees International Union
|
26,368,470
|
98,700
|
|
|
Communication Workers of America
|
26,305,500
|
125,300
|
|
|
Service Employees International Union
|
26,252,000
|
1,086,200
|
|
|
Laborers Union
|
25,734,000
|
2,138,000
|
|
|
American Federation of Teachers
|
25,682,800
|
200,000
|
|
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United Auto Workers
|
25,082,200
|
182,700
|
|
|
Teamsters Union
|
24,926,400
|
1,822,000
|
|
|
Carpenters and Joiners Union
|
24,094,100
|
2,658,000
|
|
|
Machinists & Aerospace Workers Union
|
23,875,600
|
226,300
|
|
|
United Food and Commercial Workers Union
|
23,182,000
|
334,200
|
|
|
AFL-CIO
|
17,124,300
|
713,500
|
|
|
Sheet Metal Workers Union
|
16,347,200
|
342,800
|
|
|
Plumbers & Pipefitters Union
|
14,790,000
|
818,500
|
|
|
Operating Engineers Union
|
13,840,000
|
2,309,500
|
|
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Airline Pilots Association
|
12,806,600
|
2,398,300
|
|
|
International Association of Firefighters
|
12,421,700
|
2,685,400
|
|
|
United Transportation Workers
|
11,807,000
|
1,459,300
|
|
|
Ironworkers Union
|
11,638,900
|
936,000
|
|
|
American Postal Workers Union
|
11,633,100
|
544,300
|
|
|
Nat’l Active & Retired Fed. Employees Association
|
8,135,400
|
2,294,600
|
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Seafarers International Union
|
6,726,800
|
1,281,300
|
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Source: Center for Responsive Politics, Washington , D.C.
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