absentee ballot
From Longman Dictionary of Contemporary Englishabsentee ballotˌabsentee ˈballot noun [countable] American English a process by which people can vote before an election because they will be away during the electionExamples from the Corpusabsentee ballot• You can also get an absentee ballot within three days if your application is received before Oct. 28.• An absentee ballot was counted in that race and moved the candidates further apart.