More than 24,000 vote-by-mail ballots for residents of Escambia County for the March 17th Presidential Preference Primary election are in the mail. This is in addition to the more than 3,000 ballots sent to military and overseas voters earlier this month. David Stafford, Escambia County Supervisor of Elections, said voters who requested to vote-by-mail should begin receiving their ballot packages by the end of the week. Ballots must be received in the Supervisor of Elections Office no later than 7 p.m. on Election Day. Ballots may also be returned by hand to the Supervisor of Elections Office or to an early voting site.