Wiktionary
early voter
n. A person who votes earlier than the election date such as by voting by mail.
Usage examples of "early voter".
Oi polled ye many but my fews were chousen (Voter, voter, early voter, he was never too oft for old Sarum): terminals four my staties were, the Geenar, the Greasouwea, the Debwickweck, the Mifgreawis.