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19 of the 58 seats in the United States Senate (with special elections) 30 seats needed for a majority | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 Results: Democratic gain Democratic hold Independent Democratic gain Whig hold Legislature failed to elect | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The 1846–47 United States Senate elections were held on various dates in various states. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1846 and 1847, and a seat may have been filled months late or remained vacant due to legislative deadlock.[1] In these elections, terms were up for the senators in Class 2.
The Democratic Party gained four seats in the United States Senate.
Results
Senate party division, 30th Congress (1847–1849)
- Majority party: Democratic (34–38)
- Minority party: Whig (20–21)
- Other parties: Independent Democratic (1)
- Total seats: 58–60
Change in composition
Before the elections
After the February 1846 elections in Texas.
| D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
| D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
| D19 | D20 | D21 | D22 | D23 | D24 | D25 Ala. Ran |
D26 Ark. Ran |
D27 S.C. Ran |
D28 Tex. Ran |
| Majority → | D29 N.H. Ran | ||||||||
| W19 Va. Ran |
W20 Del. Unknown |
W21 Ky. Unknown |
W22 Mich. Retired |
W23 Tenn. Retired |
W24 La. Died |
V1 | D31 Ill. Retired |
D30 Miss. Unknown | |
| W18 R.I. Ran |
W17 N.C. Ran |
W16 N.J. Ran |
W15 Mass. Ran |
W14 Maine. Ran |
W13 Ga. Ran |
W12 | W11 | W10 | W9 |
| W1 | W2 | W3 | W4 | W5 | W6 | W7 | W8 | ||
As a result of the regular elections
| V3 Iowa New state |
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | |
| D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
| D19 | D20 | D21 | D22 | D23 | D24 | D25 Ala. Appointee elected |
D26 Ark. Re-elected |
D27 S.C. Re-elected |
D28 Tex. Re-elected |
| Majority → | D29 Ill. Hold | ||||||||
| W19 R.I. Hold |
V1 Tenn. W Loss |
V2 | ID1 N.H. Gain |
D34 Va. Gain |
D33 Mich. Gain |
D32 Maine. Hold |
D31 Miss. Hold |
D30 La. Hold | |
| W18 Ky. Hold |
W17 Del. Hold |
W16 N.C. Re-elected |
W15 N.J. Re-elected |
W14 Mass. Re-elected |
W13 Ga. Re-elected |
W12 | W11 | W10 | W9 |
| V4 Iowa New state |
W1 | W2 | W3 | W4 | W5 | W6 | W7 | W8 | |