AUGUSTA — A special election for the Maine House District 56 seat has been scheduled by the Maine Secretary of State’s Office to coincide with the statewide referendum Tuesday, Nov. 7, according to a statement from the office.

The House seat, which covers the town of Lisbon, was previously held by Rep. Gina M. Mason, who died unexpectedly Sept. 5.

The candidate who is elected in the Nov. 7 special election will serve out the remainder of Mason’s term, through November 2018.

Maine’s four political parties — the Democrats, Green Independents, Libertarians and Republicans — will caucus to choose their candidates for the seat. Nominations are due to the Office of the Secretary of State by 5 p.m. Tuesday, Oct. 3.

According to the statement, non-party candidates must circulate petitions and obtain the signatures of at least 50 registered voters in House District 56. The signatures must be certified by the town clerk of Lisbon.

Write-in candidates must declare their candidacy by 5 p.m. Tuesday, Oct. 10. Non-party petition forms and write-in candidate declaration forms may be obtained by contacting the Elections Division of the Secretary of State at 624-7650.