2010 Debicella decided to retire from the state legislature to run for
Connecticut's 4th congressional district in 2010. On May 21, 2010, he won the endorsement of the
Connecticut Republican Party at its convention. On August 10, 2010, Debicella won the Republican three-candidate primary field with 61% of the vote, defeating Robert Merkle and Rick Torres. The general election between Debicella and incumbent Democrat
Jim Himes was very competitive. The race made
CNN's Top 100 Most Competitive Races list,
Politico’s Daily 10 (a tracker of the closest House Races), and
Real Clear Politics' list of "toss up" races. On November 2, he lost to Himes 53–47%. Debicella won the following areas:
Darien (67%), his hometown of
Shelton (65%),
New Canaan (65%),
Easton (58%),
Monroe (58%),
Greenwich (55%),
Oxford (55%),
Ridgefield (54%),
Wilton (54%), and
Trumbull (53%). He lost
Fairfield (49%),
Redding (48%),
Weston (47%),
Westport (44%),
Norwalk (40%),
Stamford (39%), and Bridgeport (16%).
2014 In September 2013, Debicella decided to run a rematch against Jim Himes in the newly redrawn 4th district. Debicella would again lose to Himes, this time by a slightly larger 54% to 46% margin. ==Electoral history==