Compulsory voting laws introduce a legal requirement to vote that substantially increases in voter turnout. Additionally, this study provides evidence that a legal requirement to vote also generates a more politically informed population. A comparative case study leverages intra-national variation in mandatory voting regulations across the Austrian Provinces over time. The analysis constructs novel measures intended to quantify recent and accumulated exposure to compulsory voting laws. The results suggest that exposure to mandatory voting laws caused Austrian citizens to increase their political interest and attention to political news, as well as their level of information about party platforms on whether or not to expand EU integration. As a whole, the study suggests that compulsory voting not only increases voter turnout; it also leads to an increase in political information.