| 87th 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, 1864 | ||||
| Senate | |||||
| Members | 32 | ||||
| President | Lt. Gov. David R. Floyd-Jones (D) | ||||
| Temporary President | James M. Cook (R), on February 3; James A. Bell (R), from February 4 | ||||
| Party control | Republican (20-12) | ||||
| Assembly | |||||
| Members | 128 | ||||
| Speaker | Thomas G. Alvord (R) | ||||
| Party control | Republican (82-46) | ||||
| Sessions | |||||
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The 87th New York State Legislature, consisting of the New York State Senate and the New York State Assembly, met from January 5 to April 23, 1864, during the second year of Horatio Seymour's second tenure as Governor of New York, in Albany.