Wisconsin's 16th Senate district

The 16th Senate District of Wisconsin is one of 33 districts in the Wisconsin Senate. Located in south-central Wisconsin, the district comprises much of eastern Dane County, western Jefferson County, and part of southwest Dodge County. It includes the cities of Fitchburg, Fort Atkinson, Lake Mills, Stoughton, Sun Prairie, and Waterloo, and the villages of Cottage Grove, Deerfield, and Marshall, and parts of the city of Madison and the village of McFarland. It also contains Lake Kegonsa State Park and most of Lake Koshkonong.

Current elected officials
Melissa Agard is the senator representing the 16th district. She was first elected in the 2020 general election. Before serving as senator, she served in the Wisconsin State Assembly from 2013 to 2021, representing Madison's north side.

Each Wisconsin State Senate district is composed of three Wisconsin State Assembly districts. The 16th Senate district comprises the 46th, 47th, and 48th Assembly districts. The current representatives of those districts are:
 * Assembly District 46: Melissa Ratcliff (D–Cottage Grove)
 * Assembly District 47: Jimmy P. Anderson (D–Fitchburg)
 * Assembly District 48: Samba Baldeh (D–Madison)

The district crosses two congressional districts. The portion of the district in Dodge and Jefferson counties fall within Wisconsin's 5th congressional district, which is represented by U.S. Representative Scott L. Fitzgerald. The remainder of the district, in Dane County, falls within Wisconsin's 2nd congressional district, represented by U.S. Representative Mark Pocan.

Past senators
Notable past senators include:
 * Christopher Latham Sholes, 1848-1850, "father of the typewriter"
 * John Sharpstein, 1852, Justice of the Supreme Court of California
 * Nelson Dewey, 1854-1856, 1st Governor of Wisconsin
 * J. Allen Barber, 1856-1858, U.S. Congressman (1871-1875), 15th Speaker of the Wisconsin State Assembly
 * George Cochrane Hazelton, 1868-1872, U.S. Congressman (1877-1883), 1st Attorney General for the District of Columbia
 * John J. Blaine, 1909-1913, 24th Governor of Wisconsin, United States Senator (1927-1933)
 * Gaylord Nelson, 1949-1958, 35th Governor of Wisconsin, United States Senator (1963-1981)
 * Charles Chvala, 1985-2005, Majority Leader (1999-2002)
 * Mark F. Miller, 2005-2021, Majority Leader (2012-2013)