Establishes the democracy is strengthened by casting light on spending in elections act of 2018 (the Washington state DISCLOSE act of 2018).

Finds that: (1) Nonprofit organizations are increasingly engaging in campaign activities, including taking a more active role in contributing to candidate and ballot proposition campaigns and, in some cases, these activities are occurring without adequate public disclosure; and

(2) Many nonprofit organizations wish to use the provisions of current law to anonymously contribute to campaign activity.

Closes campaign finance disclosure loopholes and requires the disclosure of contributions and expenditures by nonprofit organizations that participate significantly in state elections to increase transparency and accountability, deter corruption, and strengthen confidence in the election process.