MO HB1052

Requires voters to register with a designated party affiliation to vote in primary elections after January 1, 2013, and restricts voters to voting only the primary ballot of their registered party.

Permits party affiliation changes or updates before the registration deadline for upcoming elections, with changes after the deadline effective only for subsequent elections.

Makes voting or attempting to vote a primary ballot of a different party than one's registered affiliation a class four election offense punishable by up to one year imprisonment or a fine up to $2,500.

Adds party affiliation as a required field in voter registration records and directives for voter identification cards to include party affiliation information.

Modifies voting machine and electronic voting system requirements to restrict primary election voters to ballots matching their registered party designation rather than allowing voters to announce party preference in advance.