Wisconsin's 31st Senate district

Wisconsin's 31st
State Senate district
Wisconsin's 31st; State Senate district
	2024 map defined in 2023 Wisc. Act 94; 2022 map defined in Johnson v. Wisconsin Elections Commission; 2011 map was defined in 2011 Wisc. Act 43; composed of Assembly districts 91, 92, and 93
Senator
	Jeff Smith; D–Eau Claire
	since January 7, 2019 (5 years)
Demographics	90.31% White; 1.51% Black; 2.14% Hispanic; 3.68% Asian; 1.62% Native American; 0.12% Hawaiian/Pacific Islander
Population (2020); • Voting age	178,440; 140,901
Website	Official website
Notes	Western Wisconsin

The 31st Senate district of Wisconsin is one of 33 districts in the Wisconsin Senate.^[1] Located in western Wisconsin, the district comprises all of Eau Claire County, southeast Dunn County, and parts of southern Chippewa County and northern Trempealeau County. It includes the cities of Eau Claire, Chippewa Falls, and Menomonie.^[2]

Current elected officials

Jeff Smith is the senator representing the 31st district. He was first elected in 2018 general election. He previously served in the Wisconsin State Assembly from 2007 through 2011.^[3]

Each Wisconsin State Senate district is composed of three Wisconsin State Assembly districts. The 31st Senate district comprises the 91st, 92nd, and 93rd Assembly districts. The current representatives of those districts are:

Assembly District 91: Jodi Emerson (D–Eau Claire)^[4]
Assembly District 92: Treig Pronschinske (R–Mondovi)^[5]
Assembly District 93: Warren Petryk (R–Washington)^[6]

The district is located almost entirely within Wisconsin's 3rd congressional district, which is represented by U.S. Representative Derrick Van Orden. The exception is one area of Chippewa County which falls within Wisconsin's 7th congressional district, represented by Tom Tiffany.^[7]

Downtown Eau Claire
City of Augusta
Village of Fairchild
Downtown Chippewa Falls
Bowman Hall on the UW–Stout campus
Mabel Tainter Memorial Building in Menomonie
Water Street Historic District
Downtown Osseo

Past senators

Previous senators include:^[8]

Note: the boundaries of districts have changed repeatedly over history. Previous politicians of a specific numbered district have represented a completely different geographic area, due to redistricting.

Senator	Party	Session	Years	District Definition
District created by 1861 Wisc. Act 216.			1861	La Crosse and Monroe counties
Edwin Flint	Rep.	15th	1862
Angus Cameron	Rep.	16th	1863
Angus Cameron	Natl. Union	17th	1864
John A. Chandler	Natl. Union	18th	1865
John A. Chandler	Natl. Union	19th	1866
Justin W. Ranney	Natl. Union	20th	1867	La Crosse and Vernon counties
Justin W. Ranney	Rep.	21st	1868
Cyrus M. Butt	Rep.	22nd	1869
Cyrus M. Butt	Rep.	23rd	1870
Angus Cameron	Rep.	24th	1871
Angus Cameron	Rep.	25th	1872	WI Senate District 31, 1872-1902 La Crosse County 1870 population: 20,297 1875 population: 23,945 1880 population: 27,072
Gideon Hixon	Rep.	26th	1873
Gideon Hixon	Rep.	27th	1874
Sylvester Nevins	Rep.	28th	1875
Sylvester Nevins	Rep.	29th	1876
Merrick Wing	Rep.	30th	1877
Merrick Wing	Rep.	31st	1878
Gysbert Van Steenwyk	Rep.	32nd	1879
Gysbert Van Steenwyk	Rep.	33rd	1880
Merrick Wing	Rep.	34th	1881
Merrick Wing	Rep.	35th	1882
Donald A. McDonald	Dem.	36th	1883–1884
Donald A. McDonald	Dem.	37th	1885–1886
Thomas A. Dyson	Rep.	38th	1887–1888
Thomas A. Dyson	Rep.	39th	1889–1890	La Crosse and Vernon counties 1885 population: 34,791
Henry Conner	Dem.	40th	1891–1892	La Crosse and Vernon counties 1885 population: 34,791
Henry Conner	Dem.	41st	1893–1894	Jackson, Monroe, and Vernon counties 1890 population: 64,119
James J. McGillivray	Rep.	42nd	1895–1896
		43rd	1897–1898	Jackson, Juneau, and Monroe counties 1895 population: 61,826 1900 population: 66,198
		44th	1899–1900
		45th	1901–1902
		46th	1903–1904
		47th	1905–1906
H. W. Barker	Rep.	48th	1907–1908
H. W. Barker	Rep.	49th	1909–1910
Howard Teasdale	Rep.	50th	1911–1912
Howard Teasdale	Rep.	51st	1913–1914	Jackson, Monroe, and Vernon counties 1910 population: 74,072
J. Henry Bennett	Rep.	52nd	1915–1916
		53rd	1917–1918
		54th	1919–1920
		55th	1921–1922
Howard Teasdale	Rep.	56th	1923–1924	Adams, Juneau, Monroe, and Marquette counties
		57th	1925–1926
		58th	1927–1928
		59th	1929–1930
Orland S. Loomis	Rep.	60th	1931–1932
Orland S. Loomis	Rep.	61st	1933–1934
James Earl Leverich	Prog.	62nd	1935–1936
James Earl Leverich	Prog.	63rd	1937–1938
Amrose B. Coller	Rep.	64th	1939–1940
Amrose B. Coller	Rep.	65th	1941–1942
James Earl Leverich	Prog.	66th	1943–1944
	Prog.	67th	1945–1946
	Rep.	68th	1947–1948
		69th	1949–1950
		70th	1951–1952
		71st	1953–1954
		72nd	1955–1956	Adams, Juneau, Monroe, Marquette, and Vernon counties 1950 population: 94,959
		73rd	1957–1958
		74th	1959–1960
		75th	1961–1962
		76th	1963–1964
		77th	1965–1966	Eau Claire, Jackson, Monroe, and Trempealeau counties
Raymond C. Johnson	Rep.	78th	1967–1968
		79th	1969–1970
		80th	1971–1972
		81st	1973–1974	Most of Clark County Most of Eau Claire County Most of Jackson County Most of Monroe County Northern Juneau County Northern Adams County Northern Jackson County Northern Trempealeau County Southwest Wood County Part of Waushara County
Thomas Harnisch	Dem.	82nd	1975–1976
		83rd	1977–1978
		84th	1979–1980
		85th	1981–1982
Rodney C. Moen	Dem.	86th	1983–1984	Buffalo, Jackson, Pepin, and Trempealeau counties Most of Eau Claire County Most of Monroe County
		87th	1985–1986	Buffalo, Jackson, Pepin, and Trempealeau counties Most of Eau Claire County Northern Monroe County Part of Clark County
		88th	1987–1988
		89th	1989–1990
		90th	1991–1992
		91st	1993–1994	Buffalo, Jackson, Pepin, and Trempealeau counties Most of Monroe County Parts of Eau Claire County
		92nd	1995–1996
		93rd	1997–1998
		94th	1999–2000
		95th	2001–2002
Ron Brown	Rep.	96th	2003–2004	Buffalo, Jackson, Pepin, and Trempealeau counties Most of Eau Claire County Eastern Pierce County Northern Monroe County Southern Dunn County Part of Clark County
Ron Brown	Rep.	97th	2005–2006
Kathleen Vinehout	Dem.	98th	2007–2008
		99th	2009–2010
		100th	2011–2012
		101st	2013–2014	Buffalo and Pepin counties and Most of Pierce County Most of Trempealeau County Western Eau Claire County Southern Dunn County Western Jackson County
		102nd	2015–2016
		103rd	2017–2018
Jeff Smith	Dem.	104th	2019–2020
		105th	2021–2022
		106th	2023–2024	Buffalo, Pepin, Trempealeau counties and most of Pierce County, southern Dunn County, western Eau Claire County, western Jackson County