LAUSR

Nearly two-thirds of persons who receive an unsolicited ballot in the mail before Election Day choose to return their ballot in person, rather than through the less costly and more convenient U.S. Postal Service. Why? How and when voters choose to return their mail ballot is consequential to the administration of elections and the confidence voters have in the outcome of elections. We offer and test four explanations for how vote by mail voters choose to return their ballot, including the social rewards of voting, the costs of voting, trust in U.S. Postal Service and a preference to cast a ballot after campaigning ends. We find supporting evidence for each explanation conditioned by prior history of voting.