| 1st Wisconsin Legislature | |||||
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 Wisconsin State Capitol, 1855 | |||||
| Overview | |||||
| Legislative body | Wisconsin Legislature | ||||
| Meeting place | Wisconsin State Capitol | ||||
| Term | June 5, 1848 – January 1, 1849 | ||||
| Election | February 1, 1848 | ||||
| Senate | |||||
| Members | 19 | ||||
| Senate President | John Edwin Holmes | ||||
| Party control | Democratic | ||||
| Assembly | |||||
| Members | 66 | ||||
| Assembly Speaker | Ninian E. Whiteside | ||||
| Party control | Democratic | ||||
| Sessions | |||||
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The First Wisconsin Legislature convened from June 5, 1848, to August 21, 1848, in regular session. Members of the Assembly and Senate were elected after an election on February 1, 1848, that ratified the proposed state constitution.
Wisconsin's first governor, Democrat Nelson Dewey, of Grant County, was sworn in on the 3rd day of this legislative term. He was the only governor of Wisconsin during this legislative term.