Only if you have home or if you are planning to return. just because you vote doesnt mean you have to file nj taxes.
https://www.fvap.gov/info/laws/voting-residency-guidelines
Voting in an election for federal offices often may not be used as the sole basis of determining residency for the purpose of imposing State and local taxes. When claiming a new legal residence or domicile, legal counsel should be consulted because there may be other factors to consider, such as tax implications.
