Delaware
- Senate
- 1: James A. Bayard, Jr. (1799-1880), Democratic
- 2: John M. Clayton (1796-1856), Opposition …died November 9, 1856.
- Joseph P. Comegys (1813-1893), Opposition …appointed when diffuse vacancy, November 19, 1856.
- Martin W. Bates (1786-1869), Democratic …elected as long as diffuse vacancy, January 14, 1857.
- House referring to Representatives (1 seat)
- A/L: Elisha D. Cullen (1799-1862), American
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