The One-Hundredth Wisconsin Legislature convened from January 3, 2011, through January 7, 2013, in regular session, though it adjourned for legislative activity on May 22, 2012. The legislature also held two special sessions and an extraordinary session during this legislative term.

The Ninety-Ninth Wisconsin Legislature convened from January 5, 2009, through January 3, 2011, in regular session, though it adjourned for legislative activity on May 26, 2010. The legislature also held two special sessions and four extraordinary sessions during this legislative term.