Louisiana's 13th State Senate district is one of 39 districts in the Louisiana State Senate. It has been represented by Republican Valarie Hodges since 2024, succeeding fellow Republican J. Rogers Pope. District 13 is currently the most Republican-leaning district in the Senate.
District 13 covers most of Livingston Parish and smaller parts of East Baton Rouge and Tangipahoa Parishes to the east of Baton Rouge, including some or all of Denham Springs, Walker, Livingston, and Ponchatoula.
The district overlaps with Louisiana's 1st and 6th congressional districts, and with the 64th, 65th, 71st, 73rd, 81st, and 95th districts of the Louisiana House of Representatives.
Louisiana uses a jungle primary system. If no candidate receives 50% in the first round of voting, when all candidates appear on the same ballot regardless of party, the top-two finishers advance to a runoff election.