Conn. Gen. Stat. § 9-438
In each municipality or voting district, the polling places for primaries held under sections 9-382 to 9-450, inclusive, shall be the same as those used for the election to be held. When unaffiliated electors are authorized under section 9-431 to vote in the primary of either of two parties, both parties shall hold their primaries in the same room of each such polling place. On the day of the primary, the polls shall remain open for voting from six o'clock a.m. until eight o'clock p.m.
Conn. Gen. Stat. § 9-438
(June, 1955, S. 603d; November, 1955, S. N87; September, 1957, P.A. 1, S. 5; 1958 Rev., S. 9-115; 1963, P.A. 17, S. 64; 297; P.A. 83-370, S. 1, 2; 83-475, S. 31, 43; P.A. 87-509, S. 18, 24; P.A. 88-162, S. 2, 4.)
See Sec. 9-174b re notification concerning extension of polling place hours.