Class 2 Special Election to fill the seat vacated by the resignation of Sen. Joseph R. Biden, Jr.'s (Edward E. Kaufman was appointed after Joseph R. Biden Jr. resigned to assume the position of Vice President.)
Source for Popular Vote data: State of Delaware Department of Elections. State Of Delaware Elections System Official Election Results General Elections - 11/02/10 Statewide Offices By County, State of Delaware Department of Elections (
) (accessed 10 Nov 2010)