Do Surveys Overestimate or Underestimate Socioeconomic Differences in Voter Turnout? Evidence from Administrative Registers

Surveys generally overestimate the overall level of voter turnout in elections due to both the misreporting of voting and nonresponse. It is sometimes argued that socioeconomic differences in turnout are exaggerated in surveys because social desirability has a more pronounced effect on eligible voters in more advantaged socioeconomic positions. However, the contribution of nonresponse bias has not been taken into consideration in these...