Nine Iowa Representatives have introduced HF 148, which makes it impossible for any voter to change party affiliation between 147 days before a primary, and the date of the general election. Current law lets independent voters join a party on primary day if they wish to vote in that party’s primary.
All of the sponsors are Republicans.
the choice of whether and when a person can switch parties should be left up to each party to decide for itself
No whereas clauses explaining rationale.
https://legiscan.com/IA/text/HF148/id/2669052