Mark F. Miller

In January 2020, Senator Miller announced he would not seek re-election to a fifth term in the Senate. He left office in January 2021.

The 2010 elections gave Republicans full control of state government with Scott Walker as Governor and new majorities in the Legislature. Miller was chosen as the new leader for Senate Democrats in the minority, and expressed interest in working with the new majority to advance the business of the state. However, Governor Walker's Budget Repair Bill—ending collective bargaining rights for public employee unions—was seen as so radical that it provoked massive protests at the State Capitol. As Republicans signaled their intent to quickly pass the legislation despite the protests, Miller fled the state with the 13 other Democratic State Senators, to deny the Senate a quorum. As the bill was nonetheless being passed during the evening hours of March 9, 2011, Miller commented acidly, "In 30 minutes, 18 senators undid 50 years of civil rights".

Other recalls were more successful, and following the removal of two Republican senators in the 2011 recall elections and the resignation of Republican Senator Pam Galloway, the two parties were each left with 16 seats in the senate. A joint leadership then emerged with Miller, as the leader of the Democrats in the Senate, and Scott L. Fitzgerald, the leader of the Republicans in the Senate, as co-leaders. Democrats claimed the majority in July 2012 after a third Republican senator was defeated in a recall election, but as Republicans had already passed new redistricting legislation which locked in a majority through gerrymandering, the Democrats recall gains were wiped away in the 2012 general election. Miller stood down as leader after the election and supported the election of first term Milwaukee Senator Chris Larson as the Democrats' leader for the 2013-2014 session.

Miller rose through the ranks in the Democratic caucus and was chosen as caucus chairman when the Democrats took the majority in 2007. Later that year, he became co-chair of the powerful Joint Finance Committee.

In 2004 he seized an opportunity to run for the Wisconsin State Senate in the 16th district, where incumbent Charles Chvala was facing criminal indictment. Miller faced fellow-Assemblymember Tom Hebl in the Democratic primary and prevailed with about 58% of the vote.

In 1998, Miller ran for Wisconsin State Assembly in a crowded Democratic primary to replace Doris Hanson, who had resigned to take a new job in the state government. Miller prevailed in the primary over Monona attorney Helen Marks Dicks, Madison city budget analyst Dan Bohrod, and Madison activist Barbara Pennington. In the general election, he faced Republican Madison consultant Kevin Miller, and won 68% of the vote in the Democrat-friendly district. Miller was re-elected in his Assembly seat in 2000 and 2002, and continued his education during this time, attending the Bowhay Institute for Legislative Leadership Development and the Flemming Fellows Leadership Institute.

Miller obtained his Bachelor's degree in 1973, at age 30, from the University of Wisconsin–Madison. He worked in real estate and entered politics in 1996, when he was elected to the Dane County Board of Supervisors.

Miller joined the Wisconsin Air National Guard in 1966 and became an aircraft pilot, he remained in the Guard until 1995. He married second-generation Japanese American Jo Oyama in 1968, just after the Supreme Court case of Loving v. Virginia struck down prohibitions against interracial marriage. Wisconsin never had a law prohibiting interracial marriage, but the couple lived for a time in Alabama, where Miller had been stationed with the Air National Guard. Miller referred to this experience as formative in discussing his perspective on marriage equality in the context of Wisconsin amending its Constitution to ban same-sex marriages in 2006. Miller and Jo have three children and reside in Monona, Wisconsin.

Mark F. Miller (born February 1, 1943) is a retired American politician. A Democrat, he served 16 years in the Wisconsin Senate (2005–2021) and was majority leader in 2012. He also served 6 years in the Wisconsin State Assembly.

Mark Miller was born in Boston, Massachusetts, in 1943, but moved to Wisconsin as a child and graduated from Middleton High School in Middleton. His father, Ed Miller, worked as a professor at the University of Wisconsin. His mother died in 1961, and, in 1963, Miller's father married Marjorie Leeper, who would later become well known in Wisconsin politics as Midge Miller. Midge became a significant activist in Wisconsin, running the Wisconsin presidential primary campaign of U.S. Senator Eugene McCarthy in 1968, and serving 14 years in the Wisconsin State Assembly. Mark Miller later credited his stepmother's example as important in his decision to go into public service.