absentee ballot

剑桥词典

a system of voting in which people send their votes by post when they cannot be present at an election
（無法到達選擧現場的人通過郵寄方式進行的）缺蓆投票制，郵寄式投票制

a piece of paper on which people mark their votes and then send them by post when they cannot be present at an election
（無法到達選擧現場的人通過郵寄方式所投的）缺蓆選票，郵寄式選票 返回 absentee ballot