what are the closed primary states
1 Thirteen states â Alaska, Arizona, Colorado, Iowa, Kansas, Massachusetts, New Hampshire, North Carolina, Oregon, Rhode Island, Utah, West Virginia, and Wyoming â have semi-closed primaries that allow voters to register or change party preference on election day. primary election is an election that narrows the field of candidates before an election for office. Primary elections are one means by which a political party or a political alliance nominates candidates for an upcoming general election or by-election.