1942 United States House of Representatives elections

Party		Total seats	Seat change	Seat percentage	Vote percentage	Popular vote
	Republican	209	47	48.0%	50.8%	14,271,483
	Democratic	222	45	51.0%	47.0%	13,181,759
	Progressive	2	1	0.4%	0.7%	186,982
	Farmer-Labor	1		0.2%	0.5%	151,684
	American Labor	1		0.2%	0.3%	91,283
	Independent	0	1	0.0%	0.2%	67,333
	Socialist	0		0.0%	0.1%	37,390
	Communist	0		0.0%	0.1%	29,659
	Prohibition	0		0.0%	0.1%	25,413
	Townsend	0		0.0%	<0.1%	9,843
	Socialist Labor	0		0.0%	<0.1%	1,963
	National Recovery	0		0.0%	<0.1%	1,705
	Win the War	0		0.0%	<0.1%	120
	Liberal	0		0.0%	<0.1%	114
	Social Reconstruction	0		0.0%	<0.1%	114
	Independent-Labor	0		0.0%	<0.1%	75
	Others	0		0.0%	0.1%	17,444
Totals		435		100.0%	100.0%	28,074,364

Source: Election Statistics - Office of the Clerk

House seats by party holding plurality in state   80+% to 100% Democratic   80+% to 100% Republican   60+% to 80% Democratic   60+% to 80% Republican   up to 60% Democratic   up to 60% Republican

Change in seats   6+ Democratic gain   6+ Republican gain   3-5 Democratic gain   3-5 Republican gain   1-2 Democratic gain   1-2 Republican gain   no net change

Some special elections were held throughout the year.

Elections are listed by date and district.

Arizona received a second representative in reapportionment; it continued to elect both representatives at large rather than drawing districts.

Three new seats were added in reapportionment, increasing the delegation from 20 to 23 seats. Two of the new seats were won by Democrats, one by a Republican. One Republican and one Democratic incumbents lost re-election, and one vacancy was won by a Republican. Therefore, both Democrats and Republicans increased by 2 seats.

Florida received a 6th seat in reapportionment; it added an at-large district to its 5 districts rather than redrawing them.

Illinois was reapportioned from 27 representatives to 26; it went from electing 2 at-large representatives to 1 without redrawing the other districts.

Indiana was redrawn from 12 districts to 11 after reapportionment; most of the districts underwent minor boundary changes, and the old 11th district was divided up, distributing Madison County to the 5th, Hancock County to the 10th, and consolidating the parts of Marion County in the old 11th and Indianapolis-based 12th into a new 11th.[6] This forced incumbents William Larrabee and Raymond S. Springer to run against each other in a district drawn mainly from Springer's old district.

Iowa was redistricted from 9 to 8 districts, with the most substantial changes being merging the 2nd, 3rd, and 4th districts in northeastern Iowa down to 2 districts.[6]

Kansas was reapportioned from 7 districts to 6, with the central Kansas 4th district losing territory on its north and gaining most of the old 5th district around Wichita.[6]

Massachusetts was reapportioned from 15 districts down to 14, with the most affected incumbent being Thomas H. Eliot of the former 9th, whose western Boston suburbs were moved into the 10th and 4th while his Cambridge residence was pulled into the more urban 11th,[6] where he was defeated in the primary by James Michael Curley.

Redistricted from 5 districts down to 4; the 4th and 1st districts were merged into each other, with the other three districts all gaining some territory on the south.[6]

Reapportioned from 1 representative to 2; both of the representatives were elected at large.