The 2006 Senate map

33 Senate contests were decided in 2006: Democrats won 22, Republicans 9, independents and others 2. Every contest below links to its page with the state's full Senate history.

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Cycle summary

Wins by party — seats decided this cycle, not the resulting chamber balance.

Contests

33

Democratic wins

22

Republican wins

9

Other wins

2

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Every contest

Statewide totals; candidate-level detail joins when the raw store is re-fetched with names.

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State	Won	Margin	Democratic	Republican	Total
Arizona	R	−9.8%	664,141	814,398	1,526,770
California	D	+24.4%	5,076,289	2,990,822	8,541,150
Connecticut	O	+30.1%	450,844	109,198	1,134,697
Delaware	D	+41.5%	170,567	69,734	242,972
Florida	D	+22.2%	2,890,548	1,826,127	4,793,440
Hawaii	D	+24.6%	210,330	126,097	342,842
Indiana	R	−87.4%	0	1,171,553	1,340,373
Massachusetts	D	+38.8%	1,500,738	661,532	2,165,490
Maryland	D	+10.0%	965,477	787,182	1,780,223
Maine	R	−53.7%	113,131	405,596	545,128
Michigan	D	+15.7%	2,151,278	1,559,597	3,780,118
Minnesota	D	+20.1%	1,278,849	835,653	2,201,818
Missouri	D	+2.3%	1,055,255	1,006,941	2,128,371
Mississippi	R	−28.7%	213,000	388,399	610,921
Montana	D	+0.9%	199,845	196,283	406,505
North Dakota	D	+39.3%	150,146	64,417	218,152
Nebraska	D	+27.8%	378,388	213,928	592,316
New Jersey	D	+9.0%	1,200,843	997,775	2,250,070
New Mexico	D	+41.3%	394,365	163,826	558,191
Nevada	R	−14.4%	238,796	322,501	582,572
New York	D	+33.1%	2,698,931	1,212,902	4,490,053
Ohio	D	+12.4%	2,257,369	1,761,037	4,018,406
Pennsylvania	D	+17.4%	2,392,984	1,684,778	4,077,762
Rhode Island	D	+7.0%	206,043	178,950	384,993
Tennessee	R	−2.7%	879,976	929,911	1,833,695
Texas	R	−25.6%	1,555,202	2,661,789	4,314,663
Utah	R	−31.3%	177,459	356,238	571,252
Virginia	D	+0.4%	1,175,606	1,166,277	2,367,985
Vermont	O	−32.4%	0	84,924	262,152
Washington	D	+16.9%	1,184,659	832,106	2,083,734
Wisconsin	D	+37.8%	1,439,214	630,299	2,138,297
West Virginia	D	+54.1%	159,154	47,408	206,562
Wyoming	R	−40.2%	57,671	135,174	192,845