Senator
Party
Notes
Session
Years
District Definition
District created
1848
Iowa County
Henry M. Billings
Dem.
1st
Montgomery M. Cothren
Dem.
2nd
1849
3rd
1850
Levi Sterling
Whig
4th
1851
5th
1852
Edward M. Hunter
Dem.
6th
1853
7th
1854
Jackson Hadley
Dem.
8th
1855
9th
1856
Augustus Greulich
Dem.
10th
1857
11th
1858
Cicero Comstock
Rep.
12th
1859
13th
1860
Charles Quentin
Dem.
Died May 8, 1862.
14th
1861
15th
1862
Francis Huebschmann
Dem.
Won 1862 special election.
William K. Wilson
Dem.
16th
1863
17th
1864
18th
1865
19th
1866
Jackson Hadley
Dem.
Died March 1867.
20th
1867
Henry L. Palmer
Dem.
Won 1867 special election.
21st
1868
William Pitt Lynde
Dem.
22nd
1869
23rd
1870
Francis Huebschmann
Dem.
Redistricted to 3rd district .
24th
1871
Philo Belden
Rep.
Redistricted from 7th district .
25th
1872
Racine County
Robert Hall Baker
Rep.
Resigned Sep. 1873.
26th
1873
Charles Herrick
Lib. Rep.
Won Nov. 1873 special election.
27th
1874
Robert Hall Baker
Rep.
28th
1875
29th
1876
Isaac W. Van Schaick
Rep.
30th
1877
31st
1878
32nd
1879
33rd
1880
34th
1881
35th
1882
Jedd P. C. Cottrill
Dem.
36th
1883–1884
37th
1885–1886
Theodore Fritz
People's
38th
1887–1888
39th
1889–1890
Paul Bechtner
Dem.
40th
1891–1892
41st
1893–1894
William H. Austin
Rep.
42nd
1895–1896
43rd
1897–1898
Wards 1, 2, 3, 4, 7, 15, 16, city of Milwaukee
Frank A. Anson
Rep.
44th
1899–1900
45th
1901–1902
Charles C. Rogers
Rep.
46th
1903–1904
Wards 2, 3, 4, 6, 7, 15, 16, City of Milwaukee
47th
1905–1906
Edward T. Fairchild
Rep.
48th
1907–1908
49th
1909–1910
George J. Weigle
Rep.
50th
1911–1912
51st
1913–1914
Edward T. Fairchild
Rep.
Appointed Wisconsin Circuit Court Judge, September 1916.
52nd
1915–1916
Henry Otto Reinnoldt
Rep.
Won 1916 special election.
53rd
1917–1918
Rudolph Beyer
Soc.
54th
1919–1920
55th
1921–1922
Bernhard Gettelman
Rep.
56th
1923–1924
57th
1925–1926
58th
1927–1928
59th
1929–1930
60th
1931–1932
61st
1933–1934
Harold V. Schoenecker
Dem.
62nd
1935–1936
63rd
1937–1938
Bernhard Gettelman
Rep.
Resigned April 1954.
64th
1939–1940
65th
1941–1942
66th
1943–1944
67th
1945–1946
68th
1947–1948
69th
1949–1950
70th
1951–1952
71st
1953–1954
--Vacant--
Walter L. Merten
Rep.
72nd
1955–1956
73rd
1957–1958
James B. Brennan
Dem.
Appointed U.S. Attorney April 1961.
74th
1959–1960
75th
1961–1962
--Vacant--
Charles J. Schmidt
Dem.
Resigned May 10, 1964.
76th
1963–1964
Wilfred Schuele
Dem.
Won 1964 special election.
77th
1965–1966
78th
1967–1968
79th
1969–1970
80th
1971–1972
81st
1973–1974
Assembly Dist. 13, 14, 15
David G. Berger
Dem.
82nd
1975–1976
83rd
1977–1978
84th
1979–1980
85th
1981–1982
Mordecai Lee
Dem.
86th
1983–1984
Wards 19-21, 25-28, 31-39, 80-89, 125-127, 129, 130, 133-135, 139, 141, 142, 170, 172, 174-177, 180-182, 282-295, 299, 300, 309, 310, city of Milwaukee
87th
1985–1986
88th
1987–1988
89th
1989–1990
Tom Barrett
Dem.
Won 1989 special election.
90th
1991–1992
91st
1993–1994
City of Wauwatosa
Wards 30, 31, 39-41, 81-101, 131, 286, 288, 289, city of Milwaukee
Wards 1-23, 27-29, city of West Allis
Peggy Rosenzweig
Rep.
Won 1993 special election.
92nd
1995–1996
93rd
1997–1998
94th
1999–2000
95th
2001–2002
Thomas G. Reynolds
Rep.
96th
2003–2004
Milwaukee County
Waukesha County
97th
2005–2006
Jim Sullivan
Dem.
98th
2007–2008
99th
2009–2010
Leah Vukmir
Rep.
Elected 2010. Defeated in 2018 U.S. Senate election.
100th
2011–2012
101st
2013–2014
Assembly Dist. 13, 14, 15
102nd
2015–2016
103rd
2017–2018
Dale P. Kooyenga
Rep.
104th
2019–2020
105th
2021–2022
Rob Hutton
Rep.
Elected 2022.
106th
2023–2024
Western Milwaukee County Eastern Waukesha County
107th
2025–2026