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vote (up)on someone or something
to make a decision about someone or something by ballot. (Upon is formal and less commonly used than on.) The committee decided to vote on it. Are we going to vote on this?
vote someone on(to something)
to elect someone to something, such as a board. Let's vote Christine onto the board. We voted Dave on last term.
To hold a vote or referendum in order to decide the disposition of something: The committee will vote on the proposal next week.