Conn. Gen. Stat. § 9-158c

(2) A municipal clerk shall have the authority to designate a location in a municipal facility for the distribution, completion and processing of presidential ballot applications and the distribution, casting and return of presidential ballots under sections 9-158a to 9-158m , inclusive, on election day. Such municipal clerk may appoint one or more presidential ballot assistants to serve at such location, may delegate to such assistants any of the responsibilities assigned to municipal clerks under said sections, and shall train and supervise such presidential ballot assistants.

(b) Each overseas elector who desires to vote in a federal election under subsection (b) of section 9-158b may apply for an overseas ballot not earlier than (1) the forty-fifth day preceding a federal election which is a general election or a general election held in conjunction with a special election, and (2) the thirtieth day preceding a federal election which is a primary or a federal election which is a special election not held in conjunction with a general election. Application shall be made to the town clerk of the municipality in which the elector is so qualified to vote on a form prescribed in subsection (b) of section 9-158d .

(c) Notwithstanding the provisions of subdivision (1) of subsection (b) of this section, in any year in which the date of a primary is advanced pursuant to subdivision (2) of subsection (a) of section 9-376 , overseas electors may not apply for an overseas ballot earlier than the fortieth day preceding a federal election which is a general election or a general election held in conjunction with a special election.