The 2008 Senate map

33 Senate contests were decided in 2008: Democrats won 20, Republicans 13. Every contest below links to its page with the state's full Senate history.

akashic

Cycle summary

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

Contests

33

Democratic wins

20

Republican wins

13

akashic

Every contest

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

akashic

State	Won	Margin	Democratic	Republican	Total
Alaska	D	+1.2%	151,767	147,814	316,646
Alabama	R	−26.9%	752,391	1,305,383	2,057,774
Arkansas	D	+79.5%	804,678	0	1,011,754
Colorado	D	+10.3%	1,230,994	990,755	2,331,486
Delaware	D	+29.4%	257,539	140,595	398,134
Georgia	R	−14.9%	909,923	1,228,033	2,137,956
Iowa	D	+25.4%	941,665	560,006	1,501,671
Idaho	R	−23.5%	219,903	371,744	644,777
Illinois	D	+39.3%	3,615,844	1,520,621	5,329,883
Kansas	R	−23.6%	441,399	727,121	1,210,690
Kentucky	R	−5.9%	847,005	953,816	1,800,821
Louisiana	D	+6.4%	988,298	867,177	1,896,574
Massachusetts	D	+34.9%	1,971,974	926,044	2,994,247
Maine	R	−22.7%	279,510	444,300	724,430
Michigan	D	+28.8%	3,038,386	1,641,070	4,848,620
Minnesota	D	+0.0%	1,212,629	1,212,317	2,885,281
Mississippi	R	−22.9%	480,915	766,111	1,247,026
Montana	D	+45.8%	348,289	129,369	477,658
North Carolina	D	+8.5%	2,249,311	1,887,510	4,270,251
Nebraska	R	−17.5%	317,456	455,854	792,511
New Hampshire	D	+6.3%	358,438	314,403	694,357
New Jersey	D	+14.1%	1,951,218	1,461,025	3,482,445
New Mexico	D	+22.7%	505,128	318,522	823,650
Oklahoma	R	−17.5%	527,736	763,375	1,346,819
Oregon	D	+3.4%	864,392	805,159	1,767,504
Rhode Island	D	+46.8%	320,644	116,174	436,818
South Carolina	R	−15.3%	790,621	1,076,534	1,867,155
South Dakota	D	+25.0%	237,889	142,784	380,673
Tennessee	R	−33.5%	767,236	1,579,477	2,424,585
Texas	R	−12.0%	3,389,365	4,337,469	7,912,075
Virginia	D	+31.3%	2,369,327	1,228,830	3,640,116
West Virginia	D	+27.5%	447,560	254,629	702,189
Wyoming	R	−51.4%	60,631	189,046	249,677