The 1984 Senate map

33 Senate contests were decided in 1984: Democrats won 16, Republicans 17. 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

16

Republican wins

17

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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
Alaska	R	−42.7%	58,804	146,919	206,438
Alabama	D	+26.4%	860,535	498,508	1,371,234
Arkansas	D	+14.7%	502,341	373,615	875,956
Colorado	R	−29.6%	449,327	833,821	1,297,809
Delaware	D	+20.2%	147,831	98,101	245,932
Georgia	D	+59.9%	1,344,104	337,196	1,681,344
Iowa	D	+11.8%	716,883	564,381	1,292,700
Idaho	R	−46.2%	105,591	293,193	406,168
Illinois	D	+1.9%	2,397,165	2,308,039	4,787,335
Kansas	R	−54.8%	211,664	757,402	996,729
Kentucky	R	−0.4%	639,721	644,990	1,292,407
Louisiana	D	+100.0%	1	0	1
Massachusetts	D	+10.1%	1,393,150	1,136,913	2,530,471
Maine	R	−47.5%	142,626	404,414	551,406
Michigan	D	+4.6%	1,915,831	1,745,302	3,700,938
Minnesota	R	−16.8%	852,844	1,199,926	2,066,143
Mississippi	R	−21.9%	371,926	580,314	952,240
Montana	D	+16.2%	215,704	154,308	379,155
North Carolina	R	−3.9%	1,070,488	1,156,768	2,239,051
Nebraska	D	+3.9%	332,217	307,147	639,668
New Hampshire	R	−17.8%	157,447	225,828	384,369
New Jersey	D	+29.3%	1,986,644	1,080,100	3,096,456
New Mexico	R	−43.8%	141,253	361,371	502,634
Oklahoma	D	+52.2%	906,131	280,638	1,197,937
Oregon	R	−33.1%	406,122	808,152	1,214,735
Rhode Island	D	+45.3%	285,811	107,545	393,356
South Carolina	R	−35.0%	306,982	644,815	965,130
South Dakota	R	−49.0%	80,537	235,176	315,713
Tennessee	D	+26.9%	1,000,607	557,016	1,648,036
Texas	R	−17.1%	2,202,557	3,111,348	5,314,178
Virginia	R	−40.1%	601,142	1,406,194	2,007,487
West Virginia	D	+4.1%	374,233	344,680	722,212
Wyoming	R	−56.6%	40,525	146,373	186,898