67.673.  Repeal of tax, procedure, ballot form — effective when. — The governing body of any county which has adopted a tourism sales tax pursuant to sections 67.671 to 67.685 may submit the question of repeal of the tax to the voters at any primary or general election.  The ballot of submission shall be in substantially the following form:

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If a majority of the votes cast on the proposal are in favor of repeal, that repeal shall become effective on December thirty-first of the calendar year in which such repeal was approved.