New Jersey's Presidential primary was in early June, but was recently moved up to the last Tuesday of February, beginning with the 2008 election. There is still a regular primary for other elected offices in early June. To vote in a primary, you must be affiliated with the corresponding party. You become a registered party member by filing a Party Affiliation form [pdf] with the County Superintendent/Board of Elections, or by voting in any Primary election, if you have not already declared as a member of another party or Independent. Note that if you register as an "Independent", you are barred from voting in primaries. If you are changing your party affiliation, or changing from Independent to a party, the change must be made 50 days before the primary in order to be eligible to vote.