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2006 United States House of Representatives elections in Connecticut
All 5 Connecticut seats to the United States House of Representatives
Democratic 50–60% 60–70% 70–80% 80–90%	Republican 40–50% 50–60% 60–70%

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The 2006 United States House of Representatives elections in Connecticut were held on November 7, 2006, to elect the five members of the U.S. House, one from each of the state's congressional districts, to represent Connecticut in the 110th Congress. The elections coincided with a state gubernatorial election and a U.S. Senate election, as well as with Congressional elections in other states.

Four Democrats and one Republicans were elected in these elections; two of the Democratic victories resulted from the defeats of incumbent Republicans. The Representatives elected in these elections served in Congress from January 3, 2007, until January 3, 2009. As of 2025, this is the last election in which a Republican won a congressional district in Connecticut.

Overview

United States House of Representatives elections in Connecticut, 2006^[1]
Party		Votes	Percentage	Seats	+/–
	Democratic †	648,655	60.35%	4	+2
	Republican	419,895	39.07%	1	–2
	Green	3,090	0.29%	0	0
	Libertarian	3,058	0.28%	0	0
	Write-in candidates	43	<0.01%	0	0
Totals		1,074,741	100.00%	5	—

† Includes 5,794 votes received on the line of the Connecticut Working Families Party, which cross-endorsed the Democratic candidate in the Fifth District, Chris Murphy.

District 1

Incumbent Democrat John B. Larson faced Republican challenger Scott MacLean in the election; Larson was re-elected with 74.44 percent of the vote.

Results

Connecticut's First Congressional District election, 2006^[1]
Party		Candidate	Votes	%
	Democratic	John B. Larson (incumbent)	154,539	74.44
	Republican	Scott MacLean	53,010	25.54
	Write-In	Stephen Fournier	43	0.02
Total votes			207,592	100
	Democratic hold

District 2

Incumbent Republican Rob Simmons faced Democratic challenger Joe Courtney in the election in a rematch of their 2002 race; Courtney narrowly defeated Simmons by only 83 votes. This was the closest House race in 2006.

Results

Connecticut's Second Congressional District election, 2006^[1]
Party		Candidate	Votes	%
	Democratic	Joe Courtney	121,248	50.017
	Republican	Rob Simmons (incumbent)	121,165	49.983
Total votes			242,413	100
	Democratic gain from Republican

District 3

Incumbent Democrat Rosa L. DeLauro faced Republican challenger Joseph Vollano in the election; DeLauro was re-elected with 76 percent of the vote.

Results

Connecticut's Third Congressional District election, 2006^[1]
Party		Candidate	Votes	%
	Democratic	Rosa L. DeLauro (incumbent)	150,436	76.01
	Republican	Joseph Vollano	44,386	22.43
	Green	Daniel G. Sumrall	3,089	1.56
Total votes			197,911	100
	Democratic hold

District 4

Incumbent Republican Christopher Shays faced Democratic challenger Diane Farrell in the election; Shays was re-elected with 50.96 percent of the vote.

Endorsements

Diane Farrell (D)

Individuals

Wesley Clark, General, 2004 democratic presidential candidate^[2]

Results

Connecticut's Fourth Congressional District election, 2006^[1]
Party		Candidate	Votes	%
	Republican	Christopher Shays (incumbent)	106,510	50.96
	Democratic	Diane Farrell	99,450	47.58
	Libertarian	Phil Maymin	3,058	1.46
	Green	Vacancy in nomination	1	0.00
Total votes			209,019	100
	Republican hold

District 5

Incumbent Republican Nancy L. Johnson faced Democratic challenger Chris Murphy in the election; Murphy defeated the incumbent with 56.46 percent of the vote.

Endorsements

Chris Murphy (D)

Individuals

Wesley Clark, General, 2004 democratic presidential candidate^[3]

Results

Connecticut's Fifth Congressional District election, 2006^[1]
Party		Candidate	Votes	%
	Democratic	Chris Murphy	122,980^WF	56.46
	Republican	Nancy L. Johnson (incumbent)	94,824	43.54
Total votes			217,804	100
	Democratic gain from Republican

^WF Murphy also ran on the line of the Connecticut Working Families Party in the election, and received 5,794 of his votes on it. His Democratic and Working Families totals have been aggregated to reach 122,980.