Incumbent Democrat John B. Larson, who had represented the district since 1999, ran for re-election. He was re-elected with 58% of the vote in 2014. The district had a PVI of D+13.
Incumbent Democrat Joe Courtney, who had represented the district since 2007, ran for re-election. He was re-elected with 62% of the vote in 2014. The district had a PVI of D+5.
Incumbent Democrat Rosa DeLauro, who had represented the district since 1991, ran for re-election. She was re-elected with 67% of the vote in 2014. The district had a PVI of D+11.
Incumbent Democrat Jim Himes, who had represented the district since 2009, ran for re-election. He was re-elected with 51% of the vote in 2014. The district had a PVI of D+5.
Incumbent Democrat Elizabeth Esty, who had represented the district since 2013, ran for re-election. He was re-elected with 50% of the vote in 2014. The district had a PVI of D+3.
^ a b c d e"2016 General Election November 8, 2016 Unofficial Results". ct.gov. November 8, 2016. Retrieved November 15, 2016.
^"Republican Novak making third try for Courtney's seat". The CT Mirror. May 15, 2016. Retrieved July 18, 2016.
^"Ann Brookes will not wage GOP primary in 2nd Congressional". The CT Mirror. May 19, 2016. Retrieved July 18, 2016.
^"Former Connecticut state representative to seek Green Party's nomination for Congress". American Third Party Report. July 15, 2016. Archived from the original on August 10, 2016. Retrieved July 18, 2016.
^"Archived copy" (PDF). Archived from the original (PDF) on October 20, 2016. Retrieved November 1, 2016.{{cite web}}: CS1 maint: archived copy as title (link)
^Burns, Christopher (August 19, 2015). "Redding State Rep. John Shaban will run for U.S. Congress seat". The Redding Pilot. Archived from the original on September 6, 2015. Retrieved September 16, 2015.