Misperceiving party positions can lead voters to support parties that do not align with their preferences, undermining proximity and policy-based voting. Yet, the extent and origins of these misperceptions remain underexplored. Existing research mostly focuses on broad dimensions, like the left-right scale, which lack clear benchmarks for identifying misperceptions. This paper addresses these gaps by examining perceptions of party positions on specific policies, such as income taxes. Using original data from a panel survey experiment in Austria, I employ close-ended questions with single correct answers and parties' responses to a Voting Advice Application as benchmarks to measure misperceptions of party policy positions. The study has two main goals: (1) to quantify misperceptions about party positions by distinguishing between guesses and stable incorrect beliefs, and (2) to assess whether information about broad party stances helps citizens infer parties' specific policy positions. The findings contribute to our understanding of how voters form perceptions of party positions and translate general political messages into specific policy expectations, with broader implications for democratic accountability and party communication strategies.