United States Senate (Special) – DEM Gain
Adlai Stevenson III (D) – 2,065,054 – 57.37%
Ralph Tyler Smith (R) – 1,519,718 – 42.22%
Lynn Henderson (SW) – 8,859 – 0.25%
Louis Fisher (SL) – 5,564 – 0.15%
Scattering – 77 – 0.00%
Total Votes – 3,599,272 – 100.00%
United States House of Representatives – District 1 – DEM Hold
Ralph H. Metcalfe (D) – 93,272 – 90.96%
Janet Roberts Jennings (R) – 9,267 – 9.04%
Total Votes – 102,539 – 100.00%
United States House of Representatives – District 2 – DEM Hold
Abner J. Mikva (D-inc) – 88,252 – 74.72%
Harold E. Marks (R) – 29,853 – 25.28%
Total Votes – 118,105 – 100.00%
United States House of Representatives – District 3 – DEM Hold
Morgan F. Murphy (D) – 97,693 – 68.94%
Robert P. Rowan (R) – 44,013 – 31.06%
Scattering – 7 – 0.00%
Total Votes – 141,713 – 100.00%
United States House of Representatives – District 4 – GOP Hold
Edward J. Derwinski (R-inc) – 117,590 – 68.00%
Melvin W. Morgan (D) – 55,328 – 31.99%
Scattering – 16 – 0.01%
Total Votes – 172,934 – 100.00%
United States House of Representatives – District 5 – DEM Hold
John C. Kluczynski (D-inc) – 97,278 – 68.83%
Edmund W. Ochenkowski (R) – 44,049 – 31.17%
Total Votes – 141,327 – 100.00%
United States House of Representatives – District 6 – DEM Hold
George W. Collins (D) – 68,182 – 56.15%
Alex J. Zabrosky (R) – 53,240 – 43.85%
Scattering – 2 – 0.00%
Total Votes – 121,424 – 100.00%
United States House of Representatives – District 7 – DEM Hold
Frank Annunzio (D-inc) – 70,112 – 87.26%
Thomas J. Lento (R) – 10,235 – 12.74%
Total Votes – 80,347 – 100.00%
United States House of Representatives – District 8 – DEM Hold
Dan Rostenkowski (D-inc) – 98,453 – 73.86%
Henry S. Kaplinski (R) – 34,841 – 26.14%
Total Votes – 133,294 – 100.00%
United States House of Representatives – District 9 – DEM Hold
Sidney R. Yates (D-inc) – 111,955 – 75.77%
Edward Wolbank (R) – 35,795 – 24.23%
Total Votes – 147,750 – 100.00%
United States House of Representatives – District 10 – GOP Hold
Harold R. Collier (R-inc) – 107,416 – 62.24%
R. G. Patrick Logan (D) – 65,170 – 37.76%
Scattering – 6 – 0.00%
Total Votes – 172,592 – 100.00%
United States House of Representatives – District 11 – DEM Hold
Roman C. Pucinski (D-inc) – 137,090 – 71.94%
James R. Mason (R) – 53,461 – 28.06%
Scattering – 1 – 0.00%
Total Votes – 190,552 – 100.00%
United States House of Representatives – District 12 – GOP Hold
Robert McClory (R-inc) – 84,356 – 62.09%
James J. Cone (D) – 51,499 – 37.91%
Scattering – 1 – 0.00%
Total Votes – 135,856 – 100.00%
United States House of Representatives – District 13 – GOP Hold
Phil Crane (R-inc) – 124,649 – 57.97%
Edward A. Warman (D) – 90,364 – 42.02%
Scattering – 24 – 0.01%
Total Votes – 215,037 – 100.00%
United States House of Representatives – District 14 – GOP Hold
John N. Erlenborn (R-inc) – 112,115 – 63.58%
William J. Adelman (D) – 64,231 – 36.42%
Total Votes – 176,346 – 100.00%
United States House of Representatives – District 15 – GOP Hold
Charlotte T. Reid (R-inc) – 95,222 – 68.88%
James E. Todd (D) – 43,014 – 31.12%
Total Votes – 138,236 – 100.00%
United States House of Representatives – District 16 – GOP Hold
John B. Anderson (R-inc) – 83,296 – 66.77%
John E. Devine, Jr. (D) – 41,459 – 33.23%
Total Votes – 124,755 – 100.00%
United States House of Representatives – District 17 – GOP Hold
Leslie C. Arends (R-inc) – 92,917 – 62.25%
Lester A. Hawthorne (D) – 56,340 – 37.75%
Total Votes – 149,257 – 100.00%
United States House of Representatives – District 18 – GOP Hold
Robert H. Michel (R-inc) – 84,864 – 66.06%
Rosa Lee Fox (D) – 43,601 – 33.94%
Scattering – 2 – 0.00%
Total Votes – 128,467 – 100.00%
United States House of Representatives – District 19 – GOP Hold
Tom Railsback (R-inc) – 92,247 – 68.16%
James L. Shaw (D) – 43,094 – 31.84%
Total Votes – 135,341 – 100.00%
United States House of Representatives – District 20 – GOP Hold
Paul Findley (R-inc) – 103,485 – 67.54%
Billie M. Cox (D) – 49,727 – 32.46%
Total Votes – 153,212 – 100.00%
United States House of Representatives – District 21 – DEM Hold
Kenneth J. Gray (D-inc) – 110,374 – 62.48%
Fred Evans (R) – 66,273 – 37.52%
Total Votes – 176,647 – 100.00%
United States House of Representatives – District 22 – GOP Hold
William L. Springer (R-inc) – 83,131 – 58.99%
Robert C. Miller (D) – 57,781 – 41.01%
Total Votes – 140,912 – 100.00%
United States House of Representatives – District 23 – DEM Hold
George E. Shipley (D-inc) – 91,158 – 53.97%
Phyllis Schlafly (R) – 77,762 – 46.03%
Total Votes – 168,920 – 100.00%
United States House of Representatives – District 24 – DEM Hold
Melvin Price (D-inc) – 88,637 – 74.22%
Scott R. Randolph (R) – 30,784 – 25.78%
Total Votes – 119,421 – 100.00%