write in -
cast a vote by inserting a name that does not appear on the ballot; "Many voters wrote in the names of strangers"
vote express one's preference for a candidate or for a measure or resolution; cast a vote; "He voted for the motion"; "None of the Democrats voted last night"
write in -
write to an organization; "Many listeners wrote in after the controversial radio program"
write communicate or express by writing; "Please write to me every week"
