Conn. Gen. Stat. § 9-25: Admission of members of the armed forces as electors.

The town clerk or assistant town clerk or either registrar of voters or deputy or assistant registrar, on any week day and at any time before five o'clock p.m. on the last week day before any regular election, when requested in writing by any member of the armed forces desiring to be made an elector, or by any former member of the armed forces discharged therefrom within the calendar year immediately preceding such request, may forthwith examine the qualifications of such person and admit him to the elector's oath if he is qualified.