Snake Featherston
Banned
There's nothing you can do to prevent them from trying.
But look at this: "Hahn's Administration made serious attempts at ensuring enfranchisement of black Louisianans and laid the foundation for a black school system and began an aborted Reconstruction in Louisiana."
This isn't someone who is going to let them take over if he has anything to say about it.
Not to mention the possibilities this would mean for other states. At least with North Carolina and Tennessee the Union might switch during the war to guys like Parson Brownlow and after it to William Holden. They were as liberal as could be hoped for from the standard of Southern whites at the time. Give them slightly longer in office and they can do a bit more good, particularly if in it while Radicalism is at its height, as there will be a temporary postwar crest of Radical Republicanism like IOTL.
Of course this is still the 1860s and there's not going to be much of this for the long term, but even a year or two is equivalent to much longer in less revolutionary times. And both Brownlow and Holden IOTL were more effective as governors in the postwar world than would have been expected, and ITTL they've more time to do some very, very necessary things.