(a) When any member or member-elect of the General Assembly resigns, the member or member-elect shall resign by notifying the Secretary of the State of the member’s or member-elect’s decision, and if any member or member-elect of the General Assembly dies, the town clerk from the town in which the member or member-elect resides shall notify the Secretary of the State of such death.

(b) When any such vacancy occurs, except as provided in this section, the Governor shall, within ten days after its occurrence, issue writs of election, directed to the town clerks or assistant town clerks in the several towns in the district in which the vacancy exists, ordering an election to be held therein on the forty-sixth day after the issue of such writs to fill such vacancy, and cause them to be conveyed to such town clerks or assistant town clerks. No such election shall be held on a Saturday or Sunday. If such a vacancy occurs between the one hundred twenty-fifth day and the forty-ninth day before the day of a regular state or municipal election in November of any year, the Governor shall so issue such writs on the forty-sixth day before the day of such regular election, ordering an election to be held on the day of such regular election. If such a vacancy occurs after the forty-ninth day before the day of a regular state election but before the Wednesday following the first Monday of January of the next-succeeding year, the Governor shall not issue such writs and no election shall be held under this section, unless the position vacated is that of member-elect, in which case the Governor shall issue such writs and an election shall be held as provided in this section.

(c) Such clerks or assistant clerks, on receiving such writs, but not earlier than the date of issuance of such writs, shall warn elections to be held on the day appointed therein, in the same manner as state elections are warned, which elections shall be organized and conducted in the same manner as a state election. The vote shall be declared, certified, directed, deposited, returned and transmitted in the same manner as at a state election. The registry lists used at such elections shall be the last-completed lists, as provided in sections 9-172a and 9-172b.

(d) (1) If such vacancy resulting from the resignation or death of a member or member-elect of the General Assembly exists in a senatorial or assembly district composed of a single town or part of a single town, such nominations by political parties shall be made as the rules of such parties provide, in accordance with § 9-390, and filed with the Secretary of the State; except that (A) if such rules provide for selection by delegates and the vacancy exists in a senatorial or assembly district composed of a single town, the delegates to the convention held for the nomination of a candidate for the office of state senator or state representative in such town at the last state election shall be the delegates for the purpose of selecting a candidate to fill such vacancy; (B) if such rules provide for the selection by delegates and the vacancy exists in a senatorial or assembly district composed of part of a single town, the delegates to the convention held for the nomination of a candidate for the office of state senator or state representative in such district at the last state election shall be the delegates for the purpose of selecting a candidate to fill such vacancy; and (C) if such rules provide for direct primaries under § 9-390, the nomination shall be made by the town committee of such party in the case of a vacancy in a senatorial or assembly district composed of a single town and, in a senatorial or assembly district composed of part of a single town, by the members of the town committee from such political subdivision or senatorial or assembly district.

(2) If such vacancy resulting from the resignation or death of a member or member-elect of the General Assembly exists in a district office, as defined in § 9-372, the delegates to the senatorial or assembly convention for the last state election shall be the delegates for the purpose of selecting a candidate to fill such vacancy.

(3) If a vacancy occurs in the delegation from any town, political subdivision or district, such vacancy may be filled by the town committee of the town in which the delegate resided.

(4) Nominations by political parties pursuant to this section may be made and certified at any time after the resignation or death of the member or member-elect of the General Assembly and not later than the thirty-sixth day before the day of the election. No such nomination shall be effective until the presiding officer or secretary of any district convention has certified the nomination to the Secretary of the State or, in the case of a vacancy in a senatorial or assembly district composed of a single town or part thereof, until the presiding officer or secretary of the town committee or single town convention has certified the nomination to the Secretary of the State. If a certificate of a party’s nomination to fill a vacancy resulting from the resignation or death of a member or member-elect of the General Assembly is not received by the Secretary of the State on or before the thirty-sixth day prior to the day of the election, such certificate shall be invalid and, for purposes of § 9-224a, shall be deemed to have made no valid certification of nomination by a political party for such senatorial or assembly office.

(e) No primary shall be held for the nomination of any political party to fill any vacancy in the office of state senator or state representative and the party-endorsed candidate so selected shall be deemed, for the purposes of chapter 153, the person certified by the Secretary of the State under § 9-444 as the nominee of such party.

(f) When the vacancy is filled, the successor to the office shall appear before the Secretary of the State and be sworn to the faithful performance of duties in accordance with § 1-25.