20th Wisconsin Legislature
The Twentieth Wisconsin Legislature convened from to in regular session. This was the first legislative session after the redistricting of the Senate and Assembly according to an act of the previous session. Senators representing odd-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 odd-numbered senators were elected in the general election of November 6, 1866. Senators representing even-numbered districts were serving the second year of their two-year term, having been elected  in the general election held on November 7, 1865. Members. Members of the Senate. Members of the Wisconsin Senate for the Twentieth Wisconsin Legislature: Members of the Assembly. Members of the Assembly for the Twentieth Wisconsin Legislature: Changes from the 19th Legislature. New districts for the 20th Legislature were defined in 1866 Wisconsin Act 101, passed into law in the 19th Wisconsin Legislature.