Prior to 1990, the governor and lieutenant governor were elected in separate elections; since then they have run together on the same ticket.
List of lieutenant governors of Iowa
https://en.wikipedia.org/wiki/List_of_lieutenant_governors_of_Iowa
Prior to 1990, the governor and lieutenant governor were elected in separate elections; since then they have run together on the same ticket.
https://en.wikipedia.org/wiki/List_of_lieutenant_governors_of_Iowa