2020 election results, including vote tallies and percentages, for Connecticut's five U.S. House of Representatives seats, all won by Democratic incumbents.

U.S. HOUSE DISTRICT 1  
John Larson* (D)64%222,668
Mary Fay (R)35% 122,111
Thomas McCormick (G)1% 4,458
U.S. HOUSE DISTRICT 2  
Joe Courtney* (D)59%217,982
Justin Anderson (R)38% 140,340
Cass Martineau (G)1% 4,949
Daniel Reale (L)1% 3,901
U.S. HOUSE DISTRICT 3  
Rosa DeLauro* (D)59%203,265
Margaret Streicker (R)40%137,596
Justin Paglino (G)1%5,240
U.S. HOUSE DISTRICT 4  
Jim Himes* (D)62% 223,832
Jonathan Riddle (R)36% 130,627
Brian Merlen (I)2% 5,656
U.S. HOUSE DISTRICT 5  
Jahana Hayes* (D)55% 192,484
David Sullivan (R)44% 151,988
Bruce Walczak (I)1% 5,052
*Incumbent