The Ninety-Seventh Wisconsin Legislature convened from January 3, 2005, to January 3, 2007, in regular session, and held two concurrent special sessions in January 2005 and February 2006, and two extraordinary sessions in July 2005 and April 2006.

[1] Senators representing even-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.

[2] Senators representing odd-numbered districts were serving the third and fourth year of their four-year term, having been elected in the general election of November 5, 2002.

[3] The governor of Wisconsin during this entire term was Democrat Jim Doyle, of Dane County, serving the second two years of a four-year term, having won election in the 2002 Wisconsin gubernatorial election.