Louisiana's 30th State Senate district is one of 39 districts in the Louisiana State Senate. It has been represented by Republican Mike Reese since 2020, succeeding fellow Republican John Smith.
District 30 covers part of western Calcasieu Parish and all of Beauregard and Vernon Parishes along the Texas border, including Vinton, Dequincy, DeRidder, Fort Johnson South, Fort Johnson North, New Llano, and Leesville.
The district overlaps with Louisiana's 3rd and 4th congressional districts, and with the 24th, 30th, 32nd, 33rd, 35th, and 47th 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.