Last day to Change Party Enrollment for the Primaries in April and June.
The voter registration form should be used to change your party enrollment
from one party to another or to enroll for the first time in a party. An
application to change one's party enrollment for the primary election in any
year must be received by the board of elections no later than February 14th
of that year. Changes received on or after February 15th until seven days after
the June Primary will be set aside and opened seven days following the June
Primary and entered in the voter's registration record.