The Uniformed and Overseas Citizens Absentee Voting Act (UOCAVA) requires federal and state governments to facilitate overseas citizens' participation in federal elections. In particular, jurisdictions must be able to send out absentee ballots to overseas voters at least forty-five days before federal elections. The enfranchisement of overseas voters began with military personnel, extended to their families, and then extended to citizens who are overseas for other reasons. This monograph surveys federal court interpretations of the statute. The text of the statute is included as an appendix.