The voters shall indicate by a cross or check mark placed against the word "Yes" or "No" their opinion of the same.

The municipal officers may proceed with conducting the municipal referendum in accordance with subsection 5 only if 2/3 of those casting ballots pursuant to this subsection vote to approve creating the capital improvement district.

5.__Referendum of municipal voters.__The referendum of the municipal voters may not be called and conducted for the purposes of this chapter unless the referendum held pursuant to subsection 4 resulted in a 2/3 majority vote supporting the ballot question.__ If the referendum held pursuant to subsection 4 received a 2/3 majority vote, the municipal officers shall call and conduct a referendum for the voters of the municipality to determine if the public elements of the proposed capital improvement district authorized pursuant to subsection 4 are authorized by the voters of the municipality.

A.__The method of calling and voting on the referendum question is as provided in section 2528 except as otherwise provided in this subsection.

B.__The referendum of the municipal voters must be scheduled to occur within 45 to 90 days after the date of the referendum held pursuant to subsection 4.

C.__The referendum to be voted on must be worded substantially as follows: "Are you in favor of establishing a capital improvement district described on the reverse side of this ballot or in the attachment to this ballot and authorizing a special assessment against the several properties in the capital improvement district, with the special assessment running for a period of ____ years, for the purpose of (describe improvements), with the total assessment to all owners of property within the capital improvement district not to exceed $___________, plus a contingency of no more than 25% of that assessment, all of