1. American National Election Study. 2020. Trust in Government Index 1958–2020. https://electionstudies.org/data-tools/anes-guide/anes-guide.html?chart=trust_index. Zugegriffen am 05.04.2023.
2. Baumgartner, Frank, Jeffrey M. Berry, Marie Hojnacki, David C. Kimball, und Beth L. Leech. 2009. Lobbying and policy change. Who wins, who loses, and why. Chicago/London: The University of Chicago Press.
3. Brown, Adam. 2013. Does money buy votes? The case of self-financed gubernatorial candidates, 1998–2008. Political Behavior 35(1): 21–41.
4. Center for Responsive Politics. 2023a. Lobbying. Trends in spending. https://www.opensecrets.org/federal-lobbying/trends-in-spending. Zugegriffen am 05.04.2023.
5. ———. 2023b. Cost of election. https://www.opensecrets.org/elections-overview/cost-of-election. Zugegriffen am 05.04.2023.