Theory and evidence suggests that respondents are likely to overreport voter turnout in election surveys because they have a strong incentive to offer a socially desirable response. We suggest that contextual influences may affect the socially desirable bias, leading to variance in the rate of overreporting across countries. This leads us to hypothesize that nonvoters will be more likely to overreport voting in elections that have high turnout. We rely on validated turnout data to measure overreporting in five countries which vary a great deal in turnout: Britain, New Zealand, Norway, Sweden, and the United States. We find that in national settings with higher levels of participation, the tendency to overreport turnout may be greater than in settings where low participation is the norm.