Research spurred by the widespread adoption of new voting technology has largely neglected the issue of privacy. Using data from a field experiment, we find that a treatment intended to increase a sense of privacy is able to alter poll-worker and voter behavior, but has little direct effect on voter attitudes. More importantly, we find that concern about privacy is concentrated among an identifiable group: those who go against their community’s descriptive political norm or majority. This “political minority” is more sensitive to issues of privacy and harder to reassure that voting conditions will safeguard the confidentiality of their choices. Data from the 2008 Cooperative Congressional Election Study confirm that privacy is a concern for voters nationwide who feel out of step with their locality’s political majority.