In 1972, Washington's voters approved the state's campaign finance disclosure law, also known as the Fair Campaign Practices Act (Act), to promote disclosure of information regarding the financing of political campaigns and lobbying. These laws govern the state's campaign finance requirements by, among other things, requiring campaign finance reporting and setting contribution limits.

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Through the Act, state voters approved creation of the state's Public Disclosure Commission (Commission). The Commission is charged with providing public access to information about the financing of political campaigns, lobbyist expenditures, and the financial affairs of public officials and candidates. The Commission works to ensure compliance with and enforcement of Washington's disclosure and campaign finance laws.

Provisions on campaign disclosure and contribution are recodified and reorganized under a new title, 29B.