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1940 US Senate

33 contests

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SENATE

US Senate · 1940

Democratic Hold

DEM

51 needed

REP

IND

Before

69

22

5

After

64

25

7

Net change:D −5·R +3·I +2·33 seats contested

Chamber Control

DemocraticMajority64

Republican25

Independent7

Threshold:51 seats

D 64 – R 25 – I 7

33 contests|D won 17|R won 11|Other 5

	State ▲	Winner	W%	Votes	Runner-up	R-up%	Votes	Margin	Swing
▶	Arizona	OtherOTH	54.4%	77,070	McFarlandDEM	34.3%	48,614	D+23.0	↓ R+23.4
▶	California	JohnsonREP	82.8%	2,236,899	OtherOTH	17.2%	463,522	R+82.8	—
▶	Connecticut	MaloneyDEM	53.1%	416,740	CornellREP	45.6%	357,574	D+7.5	↑ D+4.1
▶	Delaware	TunnellDEM	50.6%	68,294	TownsendREP	47.3%	63,799	D+3.3	↑ D+10.4
▶	Florida	OtherOTH	50.3%	162,557	AndrewsDEM	49.7%	160,659	D+49.7	↑ D+4.2
▶	Idaho(S)	ThomasREP	53.0%	124,535	TaylorDEM	47.0%	110,664	R+5.9	—
▶	Illinois(S)	BrooksREP	50.1%	2,045,924	SlatteryDEM	49.6%	2,025,097	R+0.5	—
▶	Kentucky(S)	ChandlerDEM	58.3%	561,151	SmithREP	41.7%	401,812	D+16.6	—
▶	Maine	BrewsterREP	58.6%	150,149	BrannDEM	41.3%	105,740	R+17.3	↓ R+16.9
▶	Maryland	RadcliffeDEM	64.7%	394,239	NiceREP	33.5%	203,912	D+31.3	↑ D+14.9
▶	Massachusetts	WalshDEM	55.6%	1,088,838	ParkmanREP	42.8%	838,122	D+12.8	↓ R+9.2
▶	Michigan	VandenbergREP	52.6%	1,053,104	FitzgeraldDEM	47.0%	939,740	R+5.7	↓ R+1.4
▶	Minnesota	ShipsteadREP	53.0%	641,049	OtherOTH	26.4%	319,892	R+32.4	↓ R+41.8
▶	Mississippi	OtherOTH	62.2%	89,213	BilboDEM	37.8%	54,120	D+37.8	↓ R+62.2
▶	Missouri	TrumanDEM	52.0%	1,153,622	DavisREP	47.9%	1,062,951	D+4.1	↓ R+15.5
▶	Montana	WheelerDEM	73.4%	176,752	CheadleREP	26.6%	63,941	D+46.9	↑ D+26.7
▶	Nebraska	ButlerREP	57.0%	340,250	CochranDEM	41.5%	247,659	R+15.5	↓ R+27.9
▶	Nevada	PittmanDEM	60.5%	31,351	PlattREP	39.5%	20,488	D+21.0	↓ R+10.2
▶	New Jersey	BarbourREP	55.1%	1,029,331	CromwellDEM	44.1%	823,893	R+11.0	↓ R+28.1
▶	New Mexico	OtherOTH	37.4%	68,907	ChavezDEM	36.3%	66,858	D+9.8	↑ D+0.3
▶	North Dakota	LangerREP	38.1%	100,647	OtherOTH	35.4%	93,607	R+11.7	↑ D+6.3
▶	Ohio	BurtonREP	39.0%	1,192,099	McSweeneyDEM	35.1%	1,074,674	R+3.8	↓ R+24.4
▶	Pennsylvania	GuffeyDEM	51.8%	2,069,980	CookeREP	47.4%	1,893,104	D+4.4	↑ D+0.1
▶	Rhode Island	GerryDEM	55.2%	173,847	McManusREP	44.8%	141,312	D+10.3	↓ R+4.0
▶	Tennessee	McKellarDEM	70.8%	295,440	BakerREP	29.2%	121,790	D+41.6	↓ R+38.5
▶	Texas	ConnallyDEM	94.3%	993,974	ShannonREP	5.7%	60,051	D+88.6	↓ R+5.3
▶	Utah	MurdockDEM	62.9%	155,499	FarnsworthREP	37.1%	91,931	D+25.7	↑ D+18.1
▶	Vermont	AustinREP	66.5%	93,283	SearlesDEM	33.5%	47,101	R+32.9	↓ R+30.2
▶	Virginia	ByrdDEM	93.3%	274,260	OtherOTH	6.7%	19,621	D+93.3	↑ D+38.3
▶	Washington	WallgrenDEM	54.2%	404,718	ChadwickREP	45.8%	342,589	D+8.3	↓ R+18.6
▶	West Virginia	KilgoreDEM	56.3%	492,413	SweeneyREP	43.7%	381,806	D+12.7	↑ D+1.9
▶	Wisconsin	OtherOTH	45.4%	607,755	ClausenREP	41.4%	553,692	R+28.2	↓ R+29.6
▶	Wyoming	O'MahoneyDEM	58.7%	65,022	SimpsonREP	41.3%	45,682	D+17.5	↑ D+3.8

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