| 80th New York State Legislature | |||||
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 The Old State Capitol (1879) | |||||
| Overview | |||||
| Legislative body | New York State Legislature | ||||
| Jurisdiction | New York, United States | ||||
| Term | January 1 – December 31, 1857 | ||||
| Senate | |||||
| Members | 32 | ||||
| President | Lt. Gov. Henry R. Selden (R) | ||||
| Temporary President | Mark Spencer (D), from January 24 | ||||
| Party control | Republican (17-9-4) | ||||
| Assembly | |||||
| Members | 128 | ||||
| Speaker | DeWitt C. Littlejohn (R) | ||||
| Party control | Republican (81-38-8) | ||||
| Sessions | |||||
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The 80th New York State Legislature, consisting of the New York State Senate and the New York State Assembly, met from January 6 to April 18, 1857, during the first year of John A. King's governorship, in Albany.