A Democratic state representative from Everett who served on an election law committee is resigning his seat and will plead guilty to voter fraud charges in federal court in ­Boston, authorities said Thursday.

Representative Stephen “Stat” Smith, 57, faces up to two years in prison, and prosecutors will recommend a six-month sentence, according to his plea agreement. Smith has also agreed to vacate his seat, effective Jan. 1, and not seek elective office for five years from the date of his sentencing. A plea date has not been set.