In Berkeley, California, grassroots efforts are underway to promote Proposition 40, a wealth tax initiative slated for the Nov. 3 ballot, after its supporters faced significant financial disadvantages compared to well-funded opponents. The measure proposes a one-time 5 percent tax on individuals whose wealth exceeds $1 billion, with most of the generated revenue earmarked for health care programs.

The campaign backing Proposition 40, driven primarily by the Service Employees International Union-United Healthcare Workers West, has raised $34 million—substantially less than the more than $300 million amassed by opposition groups. The union has concentrated its strategy on mobilizing social media influencers, union members, and younger voters to compensate for the funding gap. Supporters have utilized digital outreach, including specially designed apps and social media networks, to amplify their message cost-effectively.

One focal point of these efforts has been the University of California, Berkeley campus, where students and young activists have recorded self-produced videos to encourage support for the tax. Individuals like Ifeanyi Ifediba, a 26-year-old graduate student, participated in paid promotions, aiming to counterbalance the expensive opposition campaigns funded largely by Silicon Valley billionaires. Another supporter, Syrak Micael, a recent UC Berkeley graduate and local council candidate, has worked extensively to engage students on campus, advocating for the measure without financial compensation.

Opponents of Proposition 40, organized under the group Building a Better California, have remained largely behind the scenes. Their campaign, benefiting from substantial contributions by billionaires and other interest groups, has focused on traditional media outlets and messaging highlighting concerns about potential negative economic impacts. The opposition argues that the wealth tax could discourage entrepreneurship and undermine the state’s fiscal stability. This viewpoint is supported by a coalition that includes some teachers, firefighters, and politicians from both parties, such as Governor Gavin Newsom and frontrunners to succeed him in the 2024 gubernatorial race.

Public polling has shown fluctuating support for the measure, with a recent Public Policy Institute of California survey indicating that 52 percent of likely voters oppose the tax, marking a decline from prior polls that suggested a narrow majority in favor. Younger voters have tended to back Proposition 40 more strongly, reflecting growing concerns about wealth inequality among that demographic.

The campaign to pass Proposition 40 also incorporates endorsements and appearances by national figures, including Senator Bernie Sanders, who has spoken at rallies supporting the initiative. While the union-led campaign has minimized television advertising within California due to budget constraints, it plans to air ads in early presidential primary states criticizing Governor Newsom's opposition to the tax measure.

As the election approaches, the initiative represents a contentious debate over taxation, economic policy, and social equity in California, highlighting the influence of money in political campaigns and the mobilization of alternative methods such as digital activism to shape public opinion.