United States Senate – DEM Hold
J. Bennett Johnston (D) 598,987 – 55.21%
John McKeithen (I) 250,161 – 23.06%
Ben C. Toledano (R) 206,846 – 19.07%
Hall M. Lyons (American) 28,910 – 2.66%
Total Votes 1,084,904 – 100.00%
United States House of Representatives – District 1 – DEM Hold
F. Edward Hébert (D-inc) 78,156 – 100.00%
United States House of Representatives – District 2 – DEM Hold
Hale Boggs (D-inc) 68,093 – 100.00%
United States House of Representatives – District 3 – GOP Gain
Dave Treen (R) 71,090 – 54.02%
J. Louis Watkins, Jr. (D) 60,521 – 45.98%
Total Votes 131,611 – 100.00%
United States House of Representatives – District 4 – DEM Hold
Joe Waggonner (D-inc) 74,397 – 100.00%
United States House of Representatives – District 5 – DEM Hold
Otto E. Passman (D-inc) 64,027 – 100.00%
United States House of Representatives – District 6 – DEM Hold
John R. Rarick (D-inc) 84,275 – 100.00%
United States House of Representatives – District 7 – DEM Hold
John Breaux (D-inc) 71,901 – 100.00%
United States House of Representatives – District 8 – DEM Hold
Gillis William Long (D) 72,607 – 68.52%
S. R. Abramson (American) 17,844 – 16.84%
Roy C. Strickland (R) 15,517 – 14.64%
Total Votes 105,968 – 100.00%