Longman Dictionary of Contemporary English
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n. (context politics English) In a Westminster parliamentary system and other democracy systems, a vote by members of a legislative body in which the members are permitted by their respective political party to vote as they individually see fit, without direction from their political leaders.
Usage examples of "free vote".
Will this City be no longer able to stand, is our dominion at an end, if a free vote is allowed to the Roman people so that they may entrust the consulship to whomsoever they will, and no plebeian may be shut out from the hope of attaining the highest honour if only he be worthy of the highest honour?
And then you have a free vote and everybody talks about how wonderful democracy is.
But this has come about through a free vote and reflects the considered opinions of both races.
It was the Nation that by the exercise of a free vote put him in power and kept him there.