Whistleblower research is understandably focused around the protagonists of the practice. We still know surprisingly little about how whistleblowing is perceived in the wider population. Drawing on a representative survey of Danish employees (N = 1,709), this paper analyses how whistleblower public support is distributed along variables such as political preference, political interest and job type, and tests whether it is conditional on whistleblower motivation and type of wrongdoing. The paper finds that public support is strong but also ambivalent. It shows that support is evenly distributed along party preference. It also demonstrates that support is not uniform but conditional on the characteristics of the whistleblower situation. These insights are important for both social and political reasons in the present situation where whistleblowing seems to be on the rise. From a policy perspective, it offers policymakers an important evidence-based navigation tool in devising whistleblower legislation.