La. Stat. tit. 3 § 3008
Upon the petition of twenty-five percent of the qualified electors in any ward of any parish of the state, the governing authority of the parish in which the ward is situated shall, within sixty days after the date on which the petition is filed, order and set the date for an election. The election shall be held not more than sixty days after the date on which it is ordered. Notice of the election shall be published in the official journal of the parish in which the ward is located at least once a week for four consecutive weeks. The first publication shall be not less than thirty days prior to the date of the election. All elections provided for in this Part shall be at the expense of the parish in which the ward calling the election is situated.
La. R.S. § 3:3008