Urgent: Mississippi turns blue! Rerom Novarum can now estimate that Democratic challenger Scott Cullum has defeated Republican incumbent Cindy Hyde-Smith in the Mississippi Senate race! Cullum becomes the first Democratic senator to represent Mississippi since 1989. The state will also have a black senator for the first time since 1881. Although Cullum holds a lead of just over 1,000 votes, with more than 96% of the votes counted, Rerum Novarum does not see a viable path to victory for the Republican incumbent. MINIMAP. technology.