Iowa Const. art. II, § 1

Electors. Only a citizen of the United States of the age of eighteen years, who shall have been a resident of this state for such period of time as shall be provided by law and of the county in which the citizen claims the citizen’s vote for such period of time as shall be provided by law, shall be entitled to vote at all elections which are authorized by law. However, for purposes of a primary election, a United States citizen must be at least eighteen years of age as of the next general election following the primary election. The required periods of residence shall not exceed six months in this state and sixty days in the county. Repealed and rewritten by Amendment 50 (2024) See United States Constitution, Amendments 19 and 26