The measure seeks to reinstate a higher threshold for local tax measures, which was previously assumed to apply to all special taxes until a 2017 state Supreme Court ruling clarified it only applied to taxes proposed by local officials. This has led to several local special taxes passing with a simple majority in recent years, including a "mansion tax" in Los Angeles and a sales tax in Sonoma County for wildfire response.

Opponents of Proposition 43, which include local government officials, labor unions, and affordable housing advocates, contend that the increased threshold would jeopardize funding for critical services like firefighting, education, and healthcare. They argue that it could lead to "minority rule," where a smaller portion of the electorate can block essential funding.

Supporters of the proposition, such as the Howard Jarvis Taxpayers Association, believe that the power to tax requires a higher degree of public consensus, citing historical precedents. They argue that the measure would clarify existing law and ensure a more robust mandate for any new local taxes. The debate highlights a fundamental disagreement over the ease with which local governments can levy taxes for specific services versus the need for broader public consent.