http://www.opensecrets.org/orgs/list.phpTop All-Time Donors, 1989-2010
Rank-- Organization-- Total '89-'09-- Dem %-- Repub --% Tilt
1 AT&T Inc----- $45,083,314-- 44%-- 55%
2 American Fedn of State,----- $42,619,761-- 98%-- 1%
3 ActBlue ------$39,955,241-- 99%-- 0%
4 National Assn of Realtors----- $36,267,773-- 48%-- 51%
5 Goldman Sachs== ---$32,263,177 --63% --36%
6 Intl Brotherhood of
----- Electrical Workers ----$32,117,695 --97% --2%
7 American Assn for Justice----- $32,017,379-- 90% --8%
8 National Education Assn----- $30,446,880-- 92%-- 6%
9 Laborers Union ----$29,318,050 --92%-- 7%
10 Teamsters Union------ $28,444,184-- 93%-- 6%
11 Service Employees International Union---- $28,349,982-- 95%-- 3%
12 Carpenters & Joiners Union---- $28,024,933-- 89%-- 9%
13 American Federation of Teachers---- $27,524,391-- 98%-- 0%
14 Communications Workers of America----- $27,423,296-- 99%-- 0%