The Ninetieth Wisconsin Legislature convened from January 7, 1991, to January 4, 1993, in regular session, and also convened in five special sessions.[1]
Senators representing odd-numbered districts were newly elected for this session and were serving the first two years of a four-year term. Assembly members were elected to a two-year term. Assembly members and odd-numbered senators were elected in the general election of November 6, 1990. Senators representing even-numbered districts were serving the third and fourth year of a four-year term, having been elected in the general election of November 8, 1988.[1]