49A.7  Proclamation.
  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.
[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
Additional provisions, §39.4 et seq. 
Iowa Constitution, Art. X