Court declared corporate donations to political parties and campaigns to be unconstitutional. Before the decision, electoral laws allowed companies to donate up to 2% of their previous year’s gross revenue to candidates or party campaign funds, which totaled over 76% ($760m) of the donations on the 2014 election. The decision came as a response to corruption scandals and illegal donations, in the wake of the Operation Car Wash. Since then, to cover the lack of private campaign finance, a public electoral fund was set up, to be divided among the parties based on their representation in the National Congress. Individuals can still make donations as a natural person, limited to 10% of their income in the previous year. See also Campaign finance reform in the United States Presidential election campaign fund checkoff Dark money Citizens United v. FEC Iron triangle Political finance, section on Regulation Country-specific (International): Party funding in Austria Federal political financing in Canada Party finance in Germany Political funding in Ireland Party funding in Israel Political funding in Japan Party funding in the Netherlands Political funding in New Zealand Party finance in Sweden Political funding in the United Kingdom Political funding in Australia References External links Legislation Proposed US bill (introduced in House) Arizona law (pdf) Maine law Common Cause - list of state efforts Proposed New York Bill Studies Early Experience of Two States that Offer Full Public Funding of Political Campaigns, study by United States Government Accounting Office. Reclaiming Democracy in Arizona, study by the Arizona Clean Elections Institute Campaign Promises: A Six-Year Review of Arizona's Experiment with Taxpayer-financed Campaigns, study by the Goldwater Institute. Testing Theories of American Politics, Princeton Study "Testing Theories of American Politics". Related organizations California Clean Money Campaign Common Cause Democracy Matters Every Voice Fair Elections Just Six Dollars League of Women Voters MAPLight.org Move to Amend The National Institute on Money in State Politics The New York Democracy Project Public Citizen Rhode Islanders for Fair Elections Rootstrikers Press coverage Harvard Professor explains Money in Politics Large Database of Clean Money Fair Elections Reform News Even corporate America wants campaign finance reform to stop crony capitalism YES! Magazine article by Public Campaign's Micah Sifry Embrace Irony by Lessig "Is Rhode Island Ready for Clean Elections?" – Providence Phoenix California Campaign Finance Reform Elections in the United States Campaign finance reform in the United States Funded elections