When Americans are asked to vote on health care at the ballot box, something remarkable happens: they show up, they engage, and they vote to pass these measures far more often than they do other initiatives. New research from the Brown School at Washington University in St. Louis reveals that health care-related ballot measures have a 70% passage rate compared to 63% for all other ballot initiatives—a gap that widens dramatically when researchers control for other variables. After adjusting for confounding factors, health care measures were more than twice as likely to pass than non-health measures. Exclude morally charged issues like abortion and physician-assisted death, and the odds skyrocket to 3.5 times more likely to succeed.
The study, "Health Policy and Direct Democracy: Predictors of Successful Measures, 2010–2024," analyzed 448 statewide ballot measures across 34 U.S. states from 2010 through 2024, including 96 measures directly related to health care policy. Assistant professor Caitlin McMurtry and her co-authors, fourth-year medical students Cerise Siamof and Michael Youssef, published their findings in the Journal of Health Politics, Policy and Law. Their work underscores a powerful truth: voters care deeply about health policy because it touches their lives directly. Ballot completion rates—the frequency with which voters actually cast a vote on a specific issue—were three times higher for health care measures than for other measures on the same ballot, a striking indicator of public engagement on these issues.
Yet this heightened interest masks a troubling vulnerability. The research found that campaign spending against a measure is one of the strongest predictors of its failure. For every additional $1 million spent in opposition, the odds of a measure passing dropped by roughly 8–10%. Health care ballot measures attracted significantly more campaign spending overall than other initiatives, with industry groups pouring substantial funds into campaigns to defeat proposals that could affect corporate profits. As Siamof noted, this raises urgent questions: "Does money from special-interest groups help to educate voters or does it serve to protect corporate profits?"
The disconnect between voter enthusiasm and voter understanding presents another challenge. Many health care ballot measures involve highly technical regulatory or financial details—provider staffing ratios, complex insurance mechanisms, drug pricing formulas—that voters may encounter for the first time at the ballot box. Unlike high-profile moral questions, these technical proposals demand specialized knowledge that voters may not possess. McMurtry acknowledged this tension: "Voters are clearly paying attention to health care issues. But many of these policies are highly technical, and it's not always clear that voters have the information they need to make fully informed decisions."
The findings reflect a broader shift in American democracy. As legislative action stalls in state capitals, voters increasingly turn to ballot initiatives to shape health policy—from insurance coverage to hospital operations to medical debt. Direct democracy, as McMurtry notes, gives voters a powerful tool to influence policy. But it also raises fundamental questions about the role of money in shaping outcomes, the adequacy of voter information, and the future of policymaking in the United States. As Americans continue to use the ballot box to address health care challenges, ensuring that voters can make fully informed decisions—and that their choices aren't distorted by overwhelming opposition spending—remains essential to the health of both democracy and the nation's health care system.