vote down
To defeat some measure or candidate through an official vote. Often used in passive constructions. A noun or pronoun can be used between "vote" and "down." As expected, the country voted the political newcomer down in the general election, but he fared much better than many had expected at the beginning of the campaign. The proposed legislation was narrowly voted down in the house of representatives.
vote someone or something down
to defeat someone or something in an election. The community voted the proposal down. They voted down the proposal.
vote down
Defeat a candidate or measure, as in The new amendment was voted down by a narrow margin. This idiom was first recorded in 1642.
vote down
v. To reject or defeat something by vote: Parliament voted down the amendment. Should we approve this budget plan or vote it down?