Carper has served multiple terms as Delaware's governor, U.S. Congressman and three terms in the U.S. Senate — a 42-year run that could run headlong into a progressive wave that has resulted in long-serving Democratic incumbents being toppled by left-leaning challengers of color in Massachusetts, Florida, Georgia, Maryland and New York.
https://www.delawareonline.com/story/news/politics/2018/09/06/delaware-primary-day-thursday-already-historic/1200935002/
More exit stage left politicians.
Offered a deal?
Bye swamp establishment.