# 1857 Iowa Senate election

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In the 1857 Iowa State Senate elections, Iowa voters elected state senators to serve in the seventh Iowa General Assembly. Elections were held for 15 of the state senate's 36 seats. State senators serve four-year terms in the Iowa State Senate.
The general election took place in 1857.
Following the previous election in 1856, Republicans had control of the Iowa Senate with 23 seats to Democrats' 12 seats and one member from the Know Nothing Party.
To claim control of the chamber from Republicans, the Democrats needed to garner seven Senate seats.
Republicans maintained control of the Iowa State Senate following the election with the balance of power shifting to Republicans holding 22 seats and Democrats having 14 seats (a net gain of 2 seats for Democrats).

## Summary of Results

* Note: The holdover Senators not up for re-election are not listed on this table.
| Senate District | Incumbent | Party | Elected Senator | Party | Outcome |
| 1st | Exum Sumner McCulloch | Dem | John R. Allen | Dem | Dem Hold |
| 1st | William A. Thurston | Dem | John Walker Rankin | Rep | Rep Gain |
| 3rd | Abner Harrison McCrary | Rep | Gideon Smith Bailey | Dem | Dem Gain |
| 4th | William Findlay Coolbaugh | Dem | William Findlay Coolbaugh | Dem | Dem Hold |
| 7th | Alvin Saunders | Rep | Alvin Saunders | Rep | Rep Hold |
| 8th | James C. Ramsey | Dem | John A. Johnson | Dem | Dem Hold |
| 9th | Daniel A. Anderson | Rep | Daniel A. Anderson | Rep | Rep Hold |
| 12th | James D. Test | Dem | William H.M. Pusey | Dem | Dem Hold |
| 13th | Hiram Thomas Cleaver | Rep | Samuel Reiner | Rep | Rep Hold |
| 15th | James Latimer Hogin | Rep | Oliver P. Sherraden | Rep | Rep Hold |
| 19th | George W. Wilkinson | Know Nothing | Andrew Oliphant Patterson | Dem | Dem Gain |
| 23rd | Julius J. Matthews | Rep | George M. Davis | Rep | Rep Hold |
| 27th | James Cunningham Jordan | Rep | William P. Davis | Rep | Rep Hold |
| 29th | Joseph Birge | Dem | Joseph Mann | Dem | Dem Hold |
| 31st | William W. Hamilton | Rep | David S. Wilson | Dem | Dem Gain |
Source:
* ↑ Republican Senator William W. Hamilton of Dubuque County was chosen to be the seventh President of the Iowa Senate. He served during the sixth Iowa General Assembly, succeeding Democratic Senator Maturin L. Fisher in that leadership position. Senator Hamilton was the first Republican to serve as President of the Senate (all the previous Senate Presidents had been Democrats). Following Hamilton's one term as President of the Iowa Senate, Article IV, section 18, of the Constitution of Iowa was enacted & established that the Lieutenant Governor of Iowa shall perform the duties of the President of the Senate. The Lieutenant Governor performed the duties of President of the Senate from January 11, 1858 through January 14, 1991. As of 1991, duties of Iowa's Lieutenant Governor no longer include presiding over the state Senate.
* ↑ Article IV, section 18, of the Constitution of Iowa at that time established that the Lieutenant Governor of Iowa shall perform the duties of the President of the Senate. The Lieutenant Governor performed the duties of President of the Senate from January 11, 1858 through January 14, 1991. As of 1991, duties of Iowa's Lieutenant Governor no longer include presiding over the state Senate. As the Lieutenant Governor at the time, Oran Faville was the eighth President of the Iowa Senate. He served during the seventh Iowa General Assembly, succeeding Republican Senator William W. Hamilton in that leadership position.
* ↑ At the time, the Iowa Senate had several multi-member districts.
* ↑ The first district was a 2-member district at the time.
* ↑ The third district was a 1-member district at the time.
* ↑ The fourth was a 2-member district at the time. However, only one of the seats in the district was contested in the election. The other was held by a holdover senator not up for re-election.
* ↑ The seventh district was a 1-member district at the time.
* ↑ The eighth district was a 1-member district at the time.
* ↑ The ninth district was a 1-member district at the time.
* ↑ The twelfth district was a 1-member district at the time.
* ↑ The thirteenth district was a 1-member district at the time.
* ↑ The fifteenth district was a 1-member district at the time.
* ↑ The nineteenth district was a 1-member district at the time.
* ↑ The twenty-third district was a 1-member district at the time.
* ↑ The twenty-seventh district was a 1-member district at the time.
* ↑ The twenty-ninth district was a 1-member district at the time.
* ↑ The thirty-first district was a 1-member district at the time.

## Detailed Results

* NOTE: The Iowa General Assembly does not provide detailed vote totals for Iowa State Senate elections in 1857.