Mississippi
- Senate
- 1: Walter Leake (1762-1825), Democratic-Republican …newly authenticated state, elected December 10, 1817.
- 2: Thomas H. Williams (1780-1840), Democratic-Republican …newly affianced state, elected December 10, 1817.
- House relation Representatives (1 seat)
- A/L: George Poindexter (1779-1853), Democratic-Republican …newly approved state, assigned December 15, 1817.
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