Wisconsin legislative term for 1866
The Nineteenth Wisconsin Legislature convened from January 10, 1866, to April 12, 1866, in regular session.
Senators representing even-numbered districts were newly elected for this session and were serving the first year of a two-year term. Assembly members were elected to a one-year term. Assembly members and even-numbered senators were elected in the general election of November 7, 1865. Senators representing odd-numbered districts were serving the second year of their two-year term, having been elected in the general election held on November 8, 1864.[1]