Today Florida moved its 2012 presidential primary to January 31.  In response to this, other states that traditionally have early contests are moving their dates up as well.  New Hampshire has not set a date for its primary yet, however the candidate filing and voter registration deadlines have been announced.  If you need to change your party affiliation before the 2012 New Hampshire primary you must do this before October 14.  See the links below for more information.


Press release



New Hampshire elections page


Update:  October 14 is apparently also the last day to register to vote in the 2012 New Hampshire primary