1978Final results
1978 election for Connecticut Senate District 33
Connecticut State Senate · Connecticut
Frederick Knous (D) won with 51.4% of the vote, defeating Philip N. Costello Jr. (R) by 2.7 points.
Frederick KnousDemocrat · winner
51.4%17,905
Philip N. Costello Jr.Republican
48.6%16,949
34,854 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET