Follow the money

Have you wondered why President Obama supports unions -- especially public unions?

Leading Union Political Campaign Contributors 1990-2010*
	Democrats	Republicans
American Federation of State, County and Municipal Employees	$40,281,900	$547,700
International 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
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 and 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 and Pipefitters Union	14,790,000	818,500
Operating Engineers Union	13,840,000	2,309,500
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
National Active & Retired Federal Employees Association	8,135,400	2,294,600
Seafarers International Union	6,726,800	1,281,300
*Source: Center for Responsive Politics, Washington, D.C.