La. Stat. tit. 38 § 1772
Notice of the election shall be given embracing substantially all matters required to be set forth in the resolution ordering the election, and shall set forth further that the authority ordering the election will, in open session, at an hour and place named, proceed to open the ballot boxes, canvass the returns, and declare the result. The notice shall be published for thirty days in a newspaper published in the parish, or if there be no newspaper published in the parish, the publication shall be made in a newspaper published in an adjoining parish and by posting in three public places in the district ordering the election. Four publications, in a newspaper once a week shall constitute publication for thirty days, provided thirty days intervene between the date of the first publication and the date of the election.
La. R.S. § 38:1772