Iowa Code § 69.14

A special election to fill a vacancy shall be held for a representative in Congress, or senator or representative in the general assembly, when the body in which such vacancy exists is in session, or will convene prior to the next general election, and the governor shall order, not later than five days from the date the vacancy exists, a special election, giving not less than forty days’ notice of such election. In the event the special election is to fill a vacancy in the general assembly while it is in session or within forty-five days of the convening of any session, the time limit provided in this section shall not apply and the governor shall order such special election at the earliest practical time, giving at least eighteen days’ notice of the special election. Any special election called under this section must be held on a Tuesday and shall not be held on the same day as a school election within the district.

[C51, §443; R60, §672; C73, §789; C97, §1279; C24, 27, 31, 35, 39, §1158; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §69.14]86 Acts, ch 1224, §33; 95 Acts, ch 189, §17