Here is the Iowa petition, by which an unqualified party in Iowa can obtain the ability to be mentioned on the voter registration form, in the part of the form that asks which party the voter is joining. The particular petition shown is the Iowa Green Party’s petition. It needs 850 signatures. No other state has ever had a procedure whereby an unqualified party can obtain the ability to be mentioned on a voter registration form, by petition.
Previous posts on this page, and in the written newsletter Ballot Access News, about the Iowa procedure, have said that the parties that submit this petition must be written in on the voter registration form. However, those previous writings were in error. Parties that comply with the 850-signature petition will actually be listed on the form. Thanks to Holly Hart for this news.