Miss. Code § 65-21-17
For the purpose of carrying out the provisions of Section 65-21-15, the board or boards of supervisors may, in the same manner as set forth in said section, declare it to be their intention to issue bonds not earlier than thirty days and publish the same, stating the amount of contemplated bond issue, in any legal newspaper in the county or counties involved as provided by law. If twenty per cent of the qualified electors petition the board or boards of supervisors for an election to determine said bond issue, the board or boards of supervisors shall order an election not later than thirty days from the date the petition was presented, and a majority of the qualified electors voting shall decide the bond issue. If one or more of the counties voting should, by a majority vote of the qualified electors voting, decide against said bond issue, the part voting against the bond issue shall not issue said bonds; but if one or more of the counties voting at the same time or some other time vote favorably by a majority of the qualified electors voting for a bond issue, as provided in this section, then the board or boards of supervisors of the county or counties so voting may issue the designated bonds for the purpose of purchasing only the designated bridge or bridges.
Miss. Code § 65-21-17