Whenever a proposition to amend the Constitution is to be submitted to a vote of the electors, the governor shall issue a proclamation of that fact, and of the date when the proposition is to be voted on, at least sixty days before that date.

Additional provisions, §39.4 et seq. Iowa Constitution, Art. X

[C97, §57; C24, 27, 31, 35, 39, §75; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §6.7] C93, §49A.7