The 1968 United States presidential election in Louisiana was held on November 5, 1968, as part of the 1968 United States presidential election. Along with four other contiguous southern states, former and future Alabama Governor George Wallace won the state for the American Party by a large margin against Democrat Hubert Humphrey and Republican Richard Nixon. As of the 2020 presidential election, this is the last election in which Jefferson Parish, St. Tammany Parish, Lafayette Parish, Ouachita Parish, Bossier Parish, Union Parish, and LaSalle Parish did not vote for the Republican presidential candidate.

Jefferson Parish is a parish in the U.S. state of Louisiana. As of the 2020 census, the population was 440,781. Its parish seat is Gretna, its largest community is Metairie, and its largest incorporated city is Kenner. Jefferson Parish is included in the Greater New Orleans area.