博·拜登
Gunning Bedford, Jr. was the first holder of the office after American independence. The office was held from 2007-2015 by Beau Biden, who was elected in 2006 and took office on January 2, 2007. He was a Democrat and the eldest son of the current US president and the longest serving U.S. senator from Delaware, Joe Biden. The current incumbent is Kathy Jennings.