Iowa Code Title II. Elections and Official Duties [Chs. 39-79] § 43.42. Change or declaration of party affiliation at polls

1. Any registered voter may change or declare a party affiliation at the polls on election day and shall be entitled to vote at any primary election. Each voter doing so shall indicate the voter's change or declaration of party affiliation on the voter's declaration of eligibility affidavit.

2. Each change or declaration of a registered voter's party affiliation so received shall be reported by the precinct election officials to the county commissioner of registration who shall enter a notation of the change on the registration records.