In a recent study Louisiana only comes in third, Mississippi takes top honors, followed by North Dakota. The District of Columbia has a disproportionate share of convictions, but it does not count as a state. Nebraska is measured as the least corrupt state, Oregon, New Hampshire, and Iowa are also near the bottom. Here is the story, here is the source account and study.
A Baton Rouge headline reads “La. not No.1 in Corruption.” Former governor Edwin Edwards received ten years in prison for corruption-related charges, one case of many in Louisiana history. The last three insurance commissioners have gone to jail for corruption.