Conn. Gen. Stat. § 9-472: Vacancy on ballot due to candidate death.

If, after determination of the order of candidates on the ballot, a candidate dies, his name shall not appear on such ballot; provided that the position of each remaining candidate on the ballot shall not be altered by the deletion of such name. The secretary may authorize town clerks to use blank stickers on the ballot, or otherwise cause the name of such deceased candidate to be obscured in such manner that such name is no longer visible, in order to comply with the provisions of this section.