I need to take issue with the Louisiana election. David Duke would have to go into a runoff with Senator Johnston if no candidate received an absolute majority of the vote which is the case ITTL.
Therefore, Duke should not have been declared elected with a plurality of the vote.
Crap, you're right. Oh well. Let's just say Duke somehow did win a majority of the vote then. (He was only 7 points away from a majority in real life anyway)
Johnston would have to blow the election for Duke to win it.
Duke would be lucky to win a majority of the white vote but blacks will turn out to vote and 99 percent of them will vote for Johnston.