 District 20 is located in Lafourche and Terrebonne Parishes along the Gulf of Mexico, including some or all of Thibodaux, Lockport, Cut Off, Golden Meadow, Houma, Dulac, and Chauvin.The district overlaps with U.S. congressional districts 1 and 6, and with Louisiana House of Representatives districts 51, 52, 53, 54, and 55.Louisiana uses a jungle primary system.