United States Senate – DEM Hold
Russell B. Long (D-inc) – 518,586 – 100.00%
United States House of Representatives – District 1 – DEM Hold
F. Edward Hébert (D-inc) – 70,658 – 100.00%
United States House of Representatives – District 2 – DEM Hold
Hale Boggs (D-inc) – 81,537 – 51.23%
David C. Treen (R) – 77,633 – 48.77%
Total Votes – 159,170 – 100.00%
United States House of Representatives – District 3 – DEM Hold
Patrick T. Caffery (D) – 39,215 – 100.00%
United States House of Representatives – District 4 – DEM Hold
J. D. Waggonner (D-inc) – 63,788 – 100.00%
United States House of Representatives – District 5 – DEM Hold
Otto E. Passman (D-inc) – 34,901 – 100.00%
United States House of Representatives – District 6 – DEM Hold
John R. Rarick (D-inc) – 100,461 – 79.27%
Loyd J. Rockhold (R) – 26,267 – 20.73%
Total Votes – 126,728 – 100.00%
United States House of Representatives – District 7 – DEM Hold
Edwin W. Edwards (D-inc) – 79,709 – 84.95%
Vance W. Plauche (R) – 14,126 – 15.05%
Total Votes – 93,835 – 100.00%
United States House of Representatives – District 8 – DEM Hold
Speedy Long (D-inc) – 41,086 – 100.00%