Conn. Gen. Stat. § 9-320
Returns of municipal elections by clerks. Elected town clerk who is registrar of vital statistics ex officio.
(b) The Secretary of the State shall keep a record of the names of the registrars of vital statistics and town clerks so returned. The secretary may certify that the persons named in such record are the registrars of vital statistics or the town clerks, as the case may be, of their respective towns for the period for which they were respectively elected.
When town clerk's duty under former section mandatory. 18 CS 73.