Iowa Code § 50.1A
At every election conducted under chapter 49, except the primary election provided for by chapter 43, and at every other election unless the law authorizing the election otherwise requires, the vote shall be canvassed at each polling place by the election board in the manner prescribed by this chapter. When the poll is closed, the precinct election officials shall forthwith, and without adjournment:
[C51, §261, 266; R60, §496, 501; C73, §622, 626; C97, §1138; C24, 27, 31, 35, 39, §840; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §50.1] C2001, §50.1A