New Mexico Secretary of State Maggie Toulouse Oliver here advocates that New Mexico switch to a semi-closed primary. Currently New Mexico has closed primaries. Her piece does not use the term “semi-closed”, but if one reads her op-ed, that is what she is advocating. New Mexico’s neighbors Colorado and Arizona also provide for semi-closed primaries. Voters who are registered members of a qualified party can only vote on their own party’s primary ballot, but independent voters can choose any primary ballot.