| Annenberg Public Policy Center |
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The Bipartisan Campaign Reform Act of 2002
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| Brennan Center for Justice |
| Brookings Institution's Campaign Finance Site |
| Campaign Finance Institute |
| Center for Democracy and Technology |
| Center for Governmental Studies |
|
Center for Public Integrity
|
| Center for Responsive Politics |
| Center for the Study of Elections and Democracy |
| Common Cause |
| Democracy 21 |
| Federal Election Commission |
| Internal Revenue Political Organization Search |
|
National Institute on Money in State Politics
|
| National Voting Rights Institute |
|
The Pew Charitable Trusts
|
| Public Citizen |
| 
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