United States Senate – DEM Hold
Paul H. Douglas (D-inc) – 2,530,943 – 54.63%
Samuel W. Witwer (R) – 2,093,846 – 45.20%
Louis Fisher (SL) – 8,007 – 0.17%
Total Votes – 4,632,796 – 100.00%
United States House of Representatives – District 1 – DEM Hold
William L. Dawson (D-inc) – 75,938 – 77.81%
Genoa S. Washington (R) – 21,660 – 22.19%
Total Votes – 97,598 – 100.00%
United States House of Representatives – District 2 – DEM Hold
Barratt O’Hara (D-inc) – 103,535 – 66.56%
Bernard E. Epton (R) – 52,028 – 33.44%
Total Votes – 155,563 – 100.00%
United States House of Representatives – District 3 – DEM Hold
William T. Murphy (D-inc) – 114,523 – 59.08%
Emmet F. Byrne (R) – 79,307 – 40.92%
Total Votes – 193,830 – 100.00%
United States House of Representatives – District 4 – GOP Hold
Edward J. Derwinski (R-inc) – 179,480 – 55.87%
Frank J. Sulewski (D) – 141,772 – 44.13%
Total Votes – 321,252 – 100.00%
United States House of Representatives – District 5 – DEM Hold
John C. Kluczynski (D-inc) – 121,240 – 71.20%
Edward J. Tomek (R) – 49,030 – 28.80%
Total Votes – 170,270 – 100.00%
United States House of Representatives – District 6 – DEM Hold
Thomas J. O’Brien (D-inc) – 107,474 – 71.73%
Frank S. Estes (R) – 42,361 – 28.27%
Total Votes – 149,835 – 100.00%
United States House of Representatives – District 7 – DEM Hold
Roland Victor Libonati (D-inc) – 98,494 – 80.51%
Lawrence J. Blasi (R) – 23,840 – 19.49%
Total Votes – 122,334 – 100.00%
United States House of Representatives – District 8 – DEM Hold
Daniel J. Rostenkowski (D-inc) – 81,092 – 67.16%
Henry Klinger, Jr. (R) – 39,651 – 32.84%
Total Votes – 120,743 – 100.00%
United States House of Representatives – District 9 – DEM Hold
Sidney R. Yates (D-inc) – 80,681 – 60.05%
Chester E. Emanuelson (R) – 53,686 – 39.95%
Total Votes – 134,367 – 100.00%
United States House of Representatives – District 10 – GOP Hold
Harold R. Collier (R-inc) – 126,671 – 57.09%
Edward V. Hanrahan (D) – 95,214 – 42.91%
Total Votes – 221,885 – 100.00%
United States House of Representatives – District 11 – DEM Hold
Roman C. Pucinski (D-inc) – 101,224 – 53.98%
Timothy P. Sheehan (R) – 86,305 – 46.02%
Total Votes – 187,529 – 100.00%
United States House of Representatives – District 12 – DEM Hold
Edward Rowan Finnegan (D) – 94,907 – 50.78%
Theodore P. Fields (R) – 91,978 – 49.22%
Total Votes – 186,885 – 100.00%
United States House of Representatives – District 13 – GOP Hold
Marguerite Stitt Church (R-inc) – 268,847 – 66.02%
Tyler Thompson (D) – 138,348 – 33.98%
Total Votes – 407,195 – 100.00%
United States House of Representatives – District 14 – GOP Hold
Elmer J. Hoffman (R-inc) – 167,128 – 63.77%
Hayes Beall (D) – 94,945 – 36.23%
Total Votes – 262,073 – 100.00%
United States House of Representatives – District 15 – GOP Hold
Noah M. Mason (R-inc) – 93,986 – 50.45%
Dorothy G. O’Brien (D) – 92,301 – 49.55%
Total Votes – 186,287 – 100.00%
United States House of Representatives – District 16 – GOP Hold
John B. Anderson (R) – 115,693 – 62.32%
Edwin M. Nelson (D) – 69,944 – 37.68%
Write-Ins – 1 – 0.00%
Total Votes – 185,638 – 100.00%
United States House of Representatives – District 17 – GOP Hold
Leslie C. Arends (R-inc) – 107,896 – 61.33%
William T. Larkin (D) – 68,020 – 38.67%
Total Votes – 175,916 – 100.00%
United States House of Representatives – District 18 – GOP Hold
Robert H. Michel (R-inc) – 94,388 – 59.26%
Richard A. Estep (D) – 64,885 – 40.74%
Total Votes – 159,273 – 100.00%
United States House of Representatives – District 19 – GOP Hold
Robert B. Chiperfield (R-inc) – 82,622 – 50.59%
John C. Watson (D) – 80,700 – 49.41%
Total Votes – 163,322 – 100.00%
United States House of Representatives – District 20 – GOP Hold
Paul Findley (R) – 77,286 – 55.57%
Montgomery B. Carrott (D) – 61,790 – 44.43%
Write-Ins – 1 – 0.00%
Total Votes – 139,077 – 100.00%
United States House of Representatives – District 21 – DEM Hold
Peter F. Mack, Jr. (D-inc) – 102,154 – 54.74%
J. Waldo Ackerman, Jr. (R) – 84,471 – 45.26%
Total Votes – 186,625 – 100.00%
United States House of Representatives – District 22 – GOP Hold
William L. Springer (R-inc) – 98,438 – 61.42%
James T. Nally (D) – 61,837 – 38.58%
Total Votes – 160,275 – 100.00%
United States House of Representatives – District 23 – DEM Hold
George E. Shipley (D-inc) – 80,718 – 51.57%
Frank H. Walker (R) – 75,809 – 48.43%
Total Votes – 156,527 – 100.00%
United States House of Representatives – District 24 – DEM Hold
Melvin Price (D-inc) – 144,560 – 72.22%
Phyllis Schlafly (R) – 55,620 – 27.78%
Total Votes – 200,180 – 100.00%
United States House of Representatives – District 25 – DEM Hold
Kenneth J. Gray (D-inc) – 92,227 – 57.90%
Gordon E. Kerr (R) – 67,067 – 42.10%
Total Votes – 159,294 – 100.00%