Louisiana: Bill to allow St. Tammany Parish vote on proposed Slidell casino advances; here’s what’s next Tyler Bridges, nola.com · May 4, 2021 at 10:15 pm The stalled push to put a casino in Slidell regained momentum Tuesday when a House legislative committee approved a measure to authorize an October referendum on the issue in St. Tammany Parish. The 8-2 vote by the House Administration on Criminal Justice Committee came after a similar measure got hung up in a Senate committee. House Bill 497 by state Rep. Mary DuBuisson, R-Slidell, now advances to the full House. If it wins approval there, it would need to pass two Senate committees and the Senate by the session’s end on June 10. Following a practice commonly used with controversial proposals, lobbyists for the Slidell casino had lawmakers introduce similar bills in both chambers in case one faltered.