Mississippi has the largest proportional Black population in the country. It's one reason the U.S. Senate race has seen millions in last-minute spending and high-profile campaign visits.
The prediction market has hired a former FBI official to make sure political insiders don't use the platform for profit from confidential election information.
Democrats hold significant advantages going into Election Day, according to a new NPR/PBS News/Marist poll. But lagging enthusiasm among key groups is just one indicator that gains may not come easy.