United States Senate – DEM Hold
Allen J. Ellender (D-inc) – 432,228 – 79.76%
George W. Reese, Jr. (R) – 109,698 – 20.24%
Write-Ins – 2 – 0.00%
Total Votes – 541,928 – 100.00%
United States House of Representatives – District 1 – DEM Hold
F. Edward Hébert (D-inc) – 70,465 – 82.15%
Norman W. Prendergast (R) – 15,314 – 17.85%
Total Votes – 85,779 – 100.00%
United States House of Representatives – District 2 – DEM Hold
Hale Boggs (D-inc) – 81,034 – 78.03%
Elliott Ross Buckley (R) – 22,818 – 21.97%
Total Votes – 103,852 – 100.00%
United States House of Representatives – District 3 – DEM Hold
Edwin E. Willis (D-inc) – 52,428 – 83.60%
Floyd J. Duplantis (R) – 10,286 – 16.40%
Total Votes – 62,714 – 100.00%
United States House of Representatives – District 4 – DEM Hold
Overton Brooks (D-inc) – 48,286 – 74.78%
Fred Charles McClanahan, Jr. (R) – 16,287 – 25.22%
Total Votes – 64,573 – 100.00%
United States House of Representatives – District 5 – DEM Hold
Otto E. Passman (D-inc) – 22,181 – 100.00%
United States House of Representatives – District 6 – DEM Hold
James H. Morrison (D-inc) – 78,640 – 85.60%
Charles H. Dillemuth (R) – 13,233 – 14.40%
Total Votes – 91,873 – 100.00%
United States House of Representatives – District 7 – DEM Hold
T. Ashton Thompson (D-inc) – 60,007 – 100.00%
United States House of Representatives – District 8 – DEM Hold
Harold B. McSween (D-inc) – 28,492 – 100.00%