Delaware, USA, regional Obligatory referendum [LOR] - Constitutional Convention

Constitution of the State of Delaware of 1897
Article XVI, 2. Constitutional Conventions; procedure; compensation of delegates; quorum; powers and duties; vacancies.
Section 2. The General Assembly by a two-thirds vote of all the members elected to each House may from time to time provide for the submission to the qualified electors of the State at the general election next thereafter the question, "Shall there be a Convention to revise the Constitution and amend the same"; and upon such submission, if a majority of those voting on said question shall decide in favor of a Convention for such purpose, the General Assembly at its next session shall provide for the election of delegates to such Convention at the next general election. [...]

Source: Constitution of the State of Delaware of 1897 (accessed 10 June 2017)

Calling for a constitutional convention

Constitution of the State of Delaware of 1897
Article XVI, § 3. Receiving, tallying and counting votes for or against Convention; return of vote; enabling legislation.
Section 3. The General Assembly shall provide for receiving, tallying and counting the votes for or against a Convention, and for returning to the General Assembly at its next session the state of such vote; and shall also enact all provisions necessary for giving effect to this Article.

Source: Constitution of the State of Delaware of 1897 (accessed 10 June 2017)

Constitution of the State of Delaware of 1897
Article XVI, § 5. Separate ballots on question of Convention.
Section 5. In voting at any general election, upon the question, "Shall there be a Convention to revise the Constitution and amend the same? ", the ballots shall be separate from those cast for any person voted for at such election, and shall be kept distinct and apart from all other ballots.

Source: Constitution of the State of Delaware of 1897 (accessed 10 June 2017)