New Hampshire Secretary of State David M. Scanlan reminds voters that the deadline to change their party affiliation before the State Primary Election is June 4, 2024.

Registered voters who wish to change their party affiliation should visit their local town/city clerk’s office before the deadline. After June 4, voters will not be able to change their party affiliation until after the State Primary. Voters who are registered Democrats after the deadline will only be able to vote in the Democratic State Primary. Voters who are registered Republicans after the deadline will only be able to vote in the Republican State Primary.

Anyone who is unsure of their party affiliation can check their voter registration information on the Secretary of State’s Voter Information Lookup page at app.sos.nh.gov. Voters can also use this website to find their local town/city clerk’s information, polling location, sample ballots when they are available, and more. If an undeclared voter participated in a recent primary election, they should check their party affiliation to make sure it is correct.

On election day, undeclared voters may vote in either the Democratic or Republican State Primary Election. Once an undeclared voter chooses their ballot, they become a registered member of that party. After casting their ballot, they can switch back to undeclared before leaving the polling place.

Registering to vote
Qualified individuals can register to vote at their local clerk’s office or a local supervisor of the checklist meeting. Supervisors of the checklist are required to hold their mandatory meeting between 6 and 13 days before the primary. Alternatively, individuals can register at the polls on election day or by absentee if they qualify. The State Primary Election will take place on September 10, 2024.