Joel Thomas Chaisson, II (born August 21, 1960), is an American Democratic politician who is currently the District Attorney in St. Charles Parish in suburban New Orleans, Louisiana. Chaisson is a former Louisiana State Senator who represented Senate District 19 in St. Charles Parish from 2000 to 2012. He was also President of the Louisiana State Senate from 2008-2012. Chaisson served in the Louisiana House of Representatives representing House District 56 in St.