At a primary votes may be cast and counted only for duly qualified candidates at such primary whose names appear on the ballot on primary day. No write-in spaces shall appear on the ballots used at a primary.
Conn. Gen. Stat. § 9-377
(June, 1955, S. 609d; November, 1955, S. N94; 1958 Rev., S. 9-122; 1963, P.A. 17, S. 6; P.A. 76-50, S. 6, 7; P.A. 86-179, S. 49, 53; P.A. 11-20, S. 25.)