The Fight for Serious AI Regulation Just Won a Big Victory in Massachusetts

Ed Markey Wins Democratic Primary for U.S. Senate in Massachusetts

Senator Ed Markey secured the Democratic nomination for his U.S. Senate seat in Massachusetts on September 1, 2026, defeating Representative Seth Moulton by a margin of 65 percent to 35 percent. Markey, 80, has held the seat since 2013 and previously served in the House. Moulton, 47, launched his challenge earlier in the year.

Markey addressed supporters after the results, stating that the outcome reflected support for his legislative record. He described his priorities as including measures on corporate taxation, military spending, and oversight of data centers. In prior statements, Markey has said he has worked for more than a decade on policies aimed at increasing regulatory authority over technology companies.

Moulton’s campaign emphasized generational change and positioned the contest partly around differing approaches to artificial intelligence policy. During a debate the previous month, Markey responded to a question about his use of AI tools by noting that he uses applications available on his devices. Moulton later posted on social media that familiarity with AI fundamentals should be required for senators and called for new leadership. He also produced a campaign advertisement highlighting the same point.

The candidates exchanged statements on other topics as well. Reports indicated Moulton held investments in defense contractors, including one firm that has worked with the U.S. Army. Markey received an endorsement from a nonprofit organization that has received funding from Anthropic, a company that has publicly supported certain AI regulatory proposals.

Markey’s campaign platform included several specific bills. The No Robot Bosses Act would prohibit employers from relying primarily on automated systems for decisions on hiring, firing, or promotion. It would require disclosure of such systems to employees, impact evaluations before deployment, and an option for human review of decisions. Additional proposals addressed requirements for human oversight in AI systems affecting healthcare access, privacy, or minors, and measures intended to reduce bias in algorithmic outputs.

Markey also introduced the Equal Tax Act, which would apply the same tax rates to investment income as to ordinary income for individuals earning more than $1 million annually. The bill would alter treatment of long-term capital gains and dividends, limit the stepped-up basis provision, restrict like-kind exchanges for high-income taxpayers, and cap the passthrough deduction. Supporters described these changes as closing preferences that favor capital income.

Moulton stated during the campaign that the United States should lead in AI development while protecting children, the economy, and communities. He did not release a detailed legislative package comparable to Markey’s agenda in the final weeks of the race. Markey maintained that his proposals addressed questions of corporate authority, data use, and labor impacts that extend beyond individual use of consumer AI applications.

Voter turnout and polling data showed Markey maintaining a consistent lead after the debate. The primary results were certified without reported disputes over procedures. Markey will face Republican opposition in the November general election.

Background on the candidates includes Markey’s long tenure on the Senate Commerce Committee and prior work on consumer protection and environmental legislation. Moulton, first elected to the House in 2014, has focused on national security and veterans’ issues. Their exchange over AI occurred against a broader congressional discussion of technology regulation that includes multiple bills introduced in both chambers since 2023.

The primary contest drew attention for its focus on technology policy at a time when federal agencies and state legislatures have considered rules on data centers, algorithmic transparency, and liability for automated decision systems. Markey’s agenda documents cite specific concerns about energy use by data centers and employment effects of automation. Moulton’s public comments stressed competitive positioning relative to other countries developing AI systems.

No independent analysis of the candidates’ respective regulatory proposals was released by nonpartisan research organizations during the final month of the campaign. The election outcome leaves Markey as the Democratic nominee for the seat he has held since winning a special election in 2013.