Wisconsin's 12th Senate district

{{Use American English|date=February 2026}} {{Use mdy dates|date=August 2023}} {{Infobox United States legislative district |image = {{switcher | {{maplink|frame=yes|plain=yes|from=Wisconsin's 12th Senate district (2024–2031).map|frame-height=300|frame-width=400|frame-coord={{coord|45.3|-88.2}}|frame-longitude=-77.2|zoom=7|overlay-horizontal-alignment=right|overlay-vertical-alignment=bottom|overlay=100px }} | From 2024 to 2031 | {{maplink|frame=yes|plain=yes|from=Wisconsin's 12th Senate district (2022–2023).map|frame-height=300|frame-width=400|frame-coord={{coord|45.3|-88.2}}|frame-longitude=-77.2|zoom=7|overlay-horizontal-alignment=right|overlay-vertical-alignment=bottom|overlay=100px }} | From 2022 to 2023 | {{maplink|frame=yes|plain=yes|from=Wisconsin's 12th Senate district (2012–2021).map|frame-height=300|frame-width=400|frame-coord={{coord|45.3|-88.2}}|frame-longitude=-77.2|zoom=7|overlay-horizontal-alignment=right|overlay-vertical-alignment=bottom|overlay=100px }} | From 2012 to 2021 }} |image_size = |image_caption = 2024 map defined in {{nowrap|[https://docs.legis.wisconsin.gov/2023/related/acts/94 2023 Wisc. Act 94]}} 2022 map defined in ''[https://www.wicourts.gov/sc/opinion/DisplayDocument.pdf?content=pdf&seqNo=512188 Johnson v. Wisconsin Elections Commission]'' 2011 map was defined in {{nowrap|[https://docs.legis.wisconsin.gov/2011/related/acts/43 2011 Wisc. Act 43]}} composed of Assembly districts 34, 35, and 36 |chamber = Senate |state = Wisconsin |district = 12 |representative = Mary Felzkowski |residence = Irma |party = Republican |incumbentsince = January 4, 2021 ({{ayd|2021|1|4}}) |Democratic = |Republican = |population = 179,426 |population_year = 2020 |voting_age = 147,090 |percent_white = 93.15 |percent_black = 0.57 |percent_hispanic = 1.5 |percent_asian = 0.68 |percent_native_american = 3.4 |percent_pacific_islander = 0.09 |percent_multiracial = |percent_other_race = |website = [https://docs.legis.wisconsin.gov/districts/senate/12 Official website] |notes = Northern Wisconsin }} The '''12th Senate district of Wisconsin''' is one of 33 districts in the Wisconsin Senate.<ref>{{Cite web|title=Senate District 12 |url=https://docs.legis.wisconsin.gov/districts/senate/12 |website= Wisconsin Legislature |access-date= March 7, 2021 }}</ref> Located in northern Wisconsin, the district comprises Florence, Forest, Langlade, Lincoln, Marinette, Oneida, and Vilas counties, and parts of northern Oconto County, northwest Shawano County, and northeast Marathon County. It contains the cities of Antigo, Eagle River, Marinette, Merrill, Peshtigo, Rhinelander, and Tomahawk.<ref>{{Cite web|url= https://maps.legis.wisconsin.gov/?sen=12&single=y |title= Wisconsin Legislative Districts - Senate District 12 Boundaries |website= Wisconsin Legislature |access-date= March 7, 2021 }}</ref>

==Current elected officials== Mary Felzkowski is the senator representing the 12th district. She was first elected in the 2020 general election. She previously served 8 years in the State Assembly.<ref>{{cite web|url= https://docs.legis.wisconsin.gov/2021/legislators/senate/2249 |title= Senator Mary Felzkowski |website=Wisconsin Legislature |access-date= March 7, 2021 }}</ref>

Each Wisconsin State Senate district is composed of three Wisconsin State Assembly districts. The 12th Senate district comprises the 34th, 35th, and 36th Assembly districts. The current representatives of those districts are:<ref>[http://legis.wisconsin.gov//Senate/sen12/Sdist12.pdf District Map]</ref> * Assembly District 34: Rob Swearingen (R–Rhinelander) * Assembly District 35: Calvin Callahan (R–Tomahawk) * Assembly District 36: Jeffrey Mursau (R–Crivitz)

The 12th Senate district is split between two congressional districts. The portion of the district in Florence, Forest, Langlade, Oneida, Vilas, Lincoln, and Marathon counties falls within the Wisconsin's 7th congressional district, which is represented by U.S. Representative Tom Tiffany; the remainder of the district, which falls within Marinette, Oconto, Menominee, and Shawano counties, is in Wisconsin's 8th congressional district, which is represented by U.S. Representative Mike Gallagher.<ref>{{cite web|url= https://legis.wisconsin.gov/ltsb/gisdocs/CongressionalMaps/Statewide_Congressional_Map_Poster.pdf |title= State of Wisconsin Congressional Districts |website= Wisconsin Legislature |access-date= March 7, 2021 }}</ref>

<gallery> File:Rhinelander Wisconsin Downtown Looking East.jpg|Downtown Rhinelander File:Eagle River Wisconsin.jpg|The Eagle River flowing through Eagle River File:LincolnCountyCourthouse.JPG|Historic Lincoln County Courthouse in Merrill File:Tomahawk Downtown Looking East.jpg|Downtown Tomahawk File:Council Grounds State Park.jpg|Pine forest within Council Grounds State Park File:MenomineeRiverNiagaraWisconsinUS141.jpg|Menominee River viewed from Niagara File:Headwaters Wilderness.jpg|Headwaters Wilderness in the Nicolet National Forest File:2009-0619-Marinette-DunlapSquare.jpg|Dunlap Square Building in Marinette File:PeshtigoFireMuseumExterior2.jpg|Peshtigo Fire Museum in Peshtigo </gallery>

==Past senators== Past senators include:<ref>Wisconsin Blue Book, 1991-92 edition, ''Statistics: History'', pages 657-666.</ref>

Note: the boundaries of the district has changed repeatedly over history. Previous politicians of this district have represented a completely different geographic area, due to redistricting. The district definitions for the given era are specified in the "District definition" column.

{| class=wikitable style="text-align:center" ! Senator ! Party ! Notes ! Session ! Years ! District Definition |- style="height:2em" | colspan="4" | ''--District created--'' | rowspan="2" | 1848 | rowspan="6" | frameless|center|150px Jefferson County |- style="height:2em" | rowspan="2" align=left | Myron B. Williams | rowspan="2" {{Party shading/Democratic}} | Dem. | rowspan="2" | | 1st |- style="height:3em" | 2nd | 1849 |- style="height:3em" | rowspan="2" align=left | Peter H. Turner | rowspan="2" {{Party shading/Democratic}} | Dem. | rowspan="2" | | 3rd | 1850 |- style="height:3em" | 4th | 1851 |- style="height:3em" | align=left | Alva Stewart | {{Party shading/Whig}} | Whig | ''Transitioned to 14th district'' | 5th | 1852 |- style="height:3em" | rowspan="3" align=left | Eleazer Wakeley | rowspan="3" {{Party shading/Democratic}} | Dem. | rowspan="3" | | 6th | 1853 | rowspan="19" | frameless|center|150px {{small|1852–1855}} frameless|center|150px {{small|1856–1860}} frameless|center|150px {{small|1861–1865}} frameless|center|150px {{small|1866–1870}} Walworth County |- style="height:3em" | 7th | 1854 |- style="height:3em" | 8th | 1855 |- style="height:3em" | rowspan="2" align=left | Jesse C. Mills | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 9th | 1856 |- style="height:3em" | 10th | 1857 |- style="height:3em" | rowspan="2" align=left | John W. Boyd | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 11th | 1858 |- style="height:3em" | 12th | 1859 |- style="height:3em" | rowspan="2" align=left | Oscar F. Bartlett | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 13th | 1860 |- style="height:3em" | 14th | 1861 |- style="height:3em" | rowspan="2" align=left | Wyman Spooner | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 15th | 1862 |- style="height:3em" | 16th | 1863 |- style="height:3em" | rowspan="6" align=left | Newton Littlejohn | rowspan="4" {{Party shading/National Union}} | {{nowrap|Natl. Union}} | rowspan="6" | | 17th | 1864 |- style="height:3em" | 18th | 1865 |- style="height:3em" | 19th | 1866 |- style="height:3em" | 20th | 1867 |- style="height:3em" | rowspan="2" {{Party shading/Republican}} | Rep. | 21st | 1868 |- style="height:3em" | 22nd | 1869 |- style="height:3em" | rowspan="2" align=left | Samuel Pratt | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 23rd | 1870 |- style="height:3em" | 24th | 1871 |- style="height:3em" | rowspan="2" align=left | Orrin Bacon | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 25th | 1872 | rowspan="5" | frameless|center|150px Green County |- style="height:3em" | 26th | 1873 |- style="height:3em" | rowspan="2" align=left | Harvey T. Moore | rowspan="2" {{Party shading/Democratic}} | Ref. | rowspan="2" | | 27th | 1874 |- style="height:3em" | 28th | 1875 |- style="height:3em" | rowspan="4" align=left | Joseph B. Treat | rowspan="4" {{Party shading/Republican}} | Rep. | rowspan="4" | | 29th | 1876 |- style="height:3em" | 30th | 1877 | rowspan="11" | frameless|center|150px {{small|1876–1881}} frameless|center|150px {{small|1882–1887}} frameless|center|150px {{small|1888–1891}} Green and Lafayette counties |- style="height:3em" | 31st | 1878 |- style="height:3em" | 32nd | 1879 |- style="height:3em" | rowspan="2" align=left | John W. Blackstone Jr. | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 33rd | 1880 |- style="height:3em" | 34th | 1881 |- style="height:3em" | rowspan="2" align=left | Archibald N. Randall | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 35th | 1882 |- style="height:3em" | 36th | 1883–1884 |- style="height:3em" | rowspan="2" align=left | James Waddington | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 37th | 1885–1886 |- style="height:3em" | 38th | 1887–1888 |- style="height:3em" | rowspan="2" align=left | Phineas Clawson | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 39th | 1889–1890 |- style="height:3em" | 40th | 1891–1892 |- style="height:3em" | rowspan="2" align=left | Neal Brown | rowspan="2" {{Party shading/Democratic}} | Dem. | rowspan="2" | | 41st | 1893–1894 | rowspan="2" | frameless|center|150px Marathon and Wood counties |- style="height:3em" | 42nd | 1895–1896 |- style="height:3em" | rowspan="2" align=left | Clarence A. Lamoreux | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 43rd | 1897–1898 | rowspan="3" | frameless|center|150px Ashland, Barron, Bayfield, Iron, Sawyer, Washburn counties |- style="height:3em" | 44th | 1899–1900 |- style="height:3em" | rowspan="2" align=left | William O'Neil | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 45th | 1901–1902 |- style="height:3em" | 46th | 1903–1904 | rowspan="5" | frameless|center|150px Ashland, Bayfield, Price, Sawyer, Taylor, Washburn counties |- style="height:3em" | rowspan="4" align=left | Albert W. Sanborn | rowspan="4" {{Party shading/Republican}} | Rep. | rowspan="4" | | 47th | 1905–1906 |- style="height:3em" | 48th | 1907–1908 |- style="height:3em" | 49th | 1909–1910 |- style="height:3em" | 50th | 1911–1912 |- style="height:3em" | rowspan="2" align=left | A. Pearce Tomkins | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 51st | 1913–1914 | rowspan="5" | frameless|center|150px Ashland, Bayfield, Sawyer, Rusk, Price counties {{small|1910 population: 69,134}} |- style="height:3em" | 52nd | 1915–1916 |- style="height:3em" | rowspan="2" align=left | A. H. Wilkinson | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 53rd | 1917–1918 |- style="height:3em" | 54th | 1919–1920 |- style="height:3em" | rowspan="2" align=left | Chester H. Werden | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 55th | 1921–1922 |- style="height:3em" | 56th | 1923–1924 | rowspan="16" | frameless|center|150px Ashland, Iron, Price, Rusk, Sawyer, Vilas counties |- style="height:3em" | rowspan="4" align=left | James H. Carroll | rowspan="4" {{Party shading/Republican}} | Rep. | rowspan="4" | | 57th | 1925–1926 |- style="height:3em" | 58th | 1927–1928 |- style="height:3em" | 59th | 1929–1930 |- style="height:3em" | 60th | 1931–1932 |- style="height:3em" | align=left | Bernard J. Gehrmann | {{Party shading/Republican}} | Rep. | ''Elected to U.S. House in 1934'' | 61st | 1933–1934 |- style="height:3em" | rowspan="3" align=left | Joseph E. McDermid | rowspan="3" {{Party shading/Progressive (Wisconsin)}} | Prog. | rowspan="3" | ''Won 1935 special election.'' | 62nd | 1935–1936 |- style="height:3em" | 63rd | 1937–1938 |- style="height:3em" | 64th | 1939–1940 |- style="height:3em" | rowspan="2" align=left | James H. Carroll | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 65th | 1941–1942 |- style="height:3em" | 66th | 1943–1944 |- style="height:3em" | rowspan="2" align=left | Ernest A. Heden | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 67th | 1945–1946 |- style="height:3em" | 68th | 1947–1948 |- style="height:3em" | rowspan="2" align=left | Clayton Hicks | rowspan="2" {{Party shading/Republican}} | Rep. | rowspan="2" | | 69th | 1949–1950 |- style="height:3em" | 70th | 1951–1952 |- style="height:3em" | align=left | Paul J. Rogan | {{Party shading/Republican}} | Rep. | ''Resigned'' | 71st | 1953–1954 |- style="height:3em" | align=left | Bernard J. Gehrmann | {{Party shading/Republican}} | Rep. | ''Won 1954 special election'' | 72nd | 1955–1956 | rowspan="5" | frameless|center|150px Iron, Lincoln, Oneida, Price, Taylor, Vilas counties |- style="height:3em" | rowspan="13" align=left | Clifford Krueger | rowspan="13" {{Party shading/Republican}} | Rep. | rowspan="13" | ''Resigned 1982.'' | 73rd | 1957–1958 |- style="height:3em" | 74th | 1959–1960 |- style="height:3em" | 75th | 1961–1962 |- style="height:3em" | 76th | 1963–1964 |- style="height:3em" | 77th | 1965–1966 | rowspan="4" | frameless|center|150px Clark, Forest, Lincoln, Oneida, Taylor, Vilas counties |- style="height:3em" | 78th | 1967–1968 |- style="height:3em" | 79th | 1969–1970 |- style="height:3em" | 80th | 1971–1972 |- style="height:3em" | 81st | 1973–1974 | rowspan="5" | frameless|center|150px Florence, Forest, Lincoln, Oneida, Rusk, Taylor, Vilas & {{Collapsible list |title={{nowrap|northeast Clark County}}, {{nowrap|most of Langlade County}}, {{nowrap|northern Marinette County}}, {{nowrap|northern Oconto County}}, {{nowrap|& southern Price County}}|titlestyle=background:transparent;text-align:center;padding-center:1.0em;font-size:85%;| * Clark County ** Town of Colby ** Town of Green Grove ** Town of Hixon ** Town of Hoard ** Town of Longwood ** Town of Mayville ** Village of Curtiss ** Village of Dorchester ** Village of Withee ** City of Abbotsford ** City of Colby ** City of Owen * Langlade County ** Town of Ackley ** Town of Ainsworth ** Town of Elcho ** Town of Evergreen ** Town of Langlade ** Town of Neva ** Town of Parrish ** Town of Peck ** Town of Polar ** Town of Price ** Town of Summit ** Town of Upham ** Town of Vilas ** Town of Wolf River ** Village of White Lake * Marinette County ** Town of Amberg ** Town of Athelstane ** Town of Beecher ** Town of Dunbar ** Town of Goodman ** Town of Middle Inlet ** Town of Niagara ** Town of Pembine ** Town of Silver Cliff ** Town of Wausaukee ** Village of Wausaukee ** City of Niagara * Oconto County ** Town of Armstrong ** Town of Bagley ** Town of Brazeau ** Town of Breed ** Town of Doty ** Town of Lakewood ** Town of Maple Valley ** Town of Riverview ** Town of Spruce ** Town of Townsend * Price County ** Town of Catawba ** Town of Georgetown ** Town of Harmony ** Town of Hill ** Town of Kennan ** Town of Knox ** Town of Ogema ** Town of Prentice ** Town of Spirit ** Village of Catawba ** Village of Kennan ** Village of Prentice }} |- style="height:3em" | 82nd | 1975–1976 |- style="height:3em" | 83rd | 1977–1978 |- style="height:3em" | 84th | 1979–1980 |- style="height:3em" | 85th | 1981–1982 |- style="height:1em" | colspan="3" | ''--Vacant--'' | rowspan="2" | 86th | rowspan="2" | 1983–1984 | rowspan="2" | frameless|center|150px Florence, Forest, Langlade, Lincoln, Menominee, Oneida, Vilas & {{Collapsible list |title={{nowrap|part of Marathon County}}, {{nowrap|northern Marinette County}}, {{nowrap|part of Oconto County}}, {{nowrap|& northwestern Shawano County}}|titlestyle=background:transparent;text-align:center;padding-center:1.0em;font-size:85%;| * Marathon County ** Town of Berlin ** Town of Hamburg ** Town of Harrison ** Town of Hewitt ** Town of Maine ** Town of Plover ** Town of Texas ** Village of Brokaw * Marinette County ** Town of Amberg ** Town of Athelstane ** Town of Beecher ** Town of Dunbar ** Town of Goodman ** Town of Niagara ** Town of Pembine ** Town of Silver Cliff ** Town of Wausaukee ** Village of Wausaukee ** City of Niagara * Oconto County ** Town of Armstrong ** Town of Breed ** Town of Doty ** Town of How ** Town of Lakewood ** Town of Riverview ** Town of Townsend * Shawano County ** Town of Almon ** Town of Aniwa ** Town of Bartelme ** Town of Birnamwood ** Town of Fairbanks ** Town of Germania ** Town of Grant ** Town of Herman ** Town of Hutchins ** Town of Morris ** Town of Red Springs ** Town of Seneca ** Town of Wittenberg ** Village of Aniwa ** Village of Birnamwood ** Village of Bowler ** Village of Eland ** Village of Gresham ** Village of Mattoon ** Village of Tigerton ** Village of Wittenberg }} |- style="height:3em" | rowspan="4" align=left | Lloyd H. Kincaid | rowspan="4" {{Party shading/Democratic}} | Dem. | rowspan="4" | ''Won 1983 special election.'' |- style="height:3em" | 87th | 1985–1986 | rowspan="5" | frameless|center|150px Florence, Forest, Langlade, Lincoln, Menominee, Oneida, Vilas & {{Collapsible list |title={{nowrap|part of Marathon County}}, {{nowrap|northern Marinette County}}, {{nowrap|northern Oconto County}}, {{nowrap|& part of Shawano County}}|titlestyle=background:transparent;text-align:center;padding-center:1.0em;font-size:85%;| * Marathon County ** Town of Berlin ** Town of Easton ** Town of Elderon ** Town of Harrison ** Town of Hewitt ** Town of Plover ** Town of Norrie ** Town of Texas ** Village of Elderon * Marinette County ** Town of Amberg ** Town of Athelstane ** Town of Beecher ** Town of Dunbar ** Town of Goodman ** Town of Middle Inlet ** Town of Niagara ** Town of Pembine ** Town of Silver Cliff ** Town of Wagner ** Town of Wausaukee ** Village of Wausaukee ** City of Niagara * Oconto County ** Town of Armstrong ** Town of Brazeau ** Town of Breed ** Town of Doty ** Town of Lakewood ** Town of Riverview ** Town of Townsend * Shawano County ** Town of Almon ** Town of Aniwa ** Town of Bartelme ** Town of Birnamwood ** Town of Fairbanks ** Town of Grant ** Town of Hutchins ** Town of Morris ** Town of Red Springs ** Town of Seneca ** Town of Wittenberg ** Village of Aniwa ** Village of Birnamwood ** Village of Bowler ** Village of Eland ** Village of Gresham ** Village of Mattoon ** Village of Tigerton ** Village of Wittenberg }} |- style="height:3em" | 88th | 1987–1988 |- style="height:2em" | rowspan="2" | 89th | rowspan="2" | 1989–1990 |- style="height:1em" | colspan="3" | ''--Vacant--'' |- style="height:3em" | rowspan="9" align=left | Roger Breske | rowspan="9" {{Party shading/Democratic}} | Dem. | rowspan="9" | ''Won 1990 special election.'' | 90th | 1991–1992 |- style="height:3em" | 91st | 1993–1994 | rowspan="5" | frameless|center|150px Florence, Forest, Langlade, Lincoln, Menominee, Oneida, Vilas & {{Collapsible list |title={{nowrap|part of Marathon County}}, {{nowrap|northern Marinette County}}, {{nowrap|northern Oconto County}}, {{nowrap|part of Portage County}}, {{nowrap|part of Shawano County}}, {{nowrap|& part of Waupaca County}}|titlestyle=background:transparent;text-align:center;padding-center:1.0em;font-size:85%;| * Marathon County ** Town of Berlin ** Town of Elderon ** Town of Franzen ** Town of Harrison ** Town of Hewitt ** Town of Plover ** Town of Norrie ** Town of Texas ** Village of Elderon ** Village of Hatley * Marinette County ** Town of Amberg ** Town of Athelstane ** Town of Beecher ** Town of Dunbar ** Town of Goodman ** Town of Middle Inlet ** Town of Niagara ** Town of Pembine ** Town of Silver Cliff ** Town of Stephenson ** Town of Wagner ** Town of Wausaukee ** Village of Crivitz ** Village of Wausaukee ** City of Niagara * Oconto County ** Town of Armstrong ** Town of Bagley ** Town of Breed ** Town of Doty ** Town of Lakewood ** Town of Riverview ** Town of Townsend * Portage County ** Town of Alban ** Village of Rosholt * Shawano County ** Town of Almon ** Town of Aniwa ** Town of Bartelme ** Town of Birnamwood ** Town of Germania ** Town of Fairbanks ** Town of Hutchins ** Town of Morris ** Town of Red Springs ** Town of Seneca ** Town of Wittenberg ** Village of Aniwa ** Village of Birnamwood ** Village of Bowler ** Village of Eland ** Village of Gresham ** Village of Mattoon ** Village of Tigerton ** Village of Wittenberg * Waupaca County ** Town of Harrison ** Town of Wyoming ** Village of Big Falls }} |- style="height:3em" | 92nd | 1995–1996 |- style="height:3em" | 93rd | 1997–1998 |- style="height:3em" | 94th | 1999–2000 |- style="height:3em" | 95th | 2001–2002 |- style="height:3em" | 96th | 2003–2004 | rowspan="5" | frameless|center|150px Florence, Forest, Langlade, Lincoln, Menominee, Oneida, Vilas & {{Collapsible list |title={{nowrap|part of Marathon County}}, {{nowrap|northern Marinette County}}, {{nowrap|northern Oconto County}}, {{nowrap|& part of Shawano County}}|titlestyle=background:transparent;text-align:center;padding-center:1.0em;font-size:85%;| * Marathon County ** Town of Elderon ** Town of Hamburg ** Town of Halsey ** Town of Harrison ** Town of Hewitt ** Village of Athens ** Village of Elderon * Marinette County ** Town of Amberg ** Town of Athelstane ** Town of Beecher ** Town of Dunbar ** Town of Goodman ** Town of Lake ** Town of Middle Inlet ** Town of Niagara ** Town of Pembine ** Town of Porterfield ** Town of Silver Cliff ** Town of Stephenson ** Town of Wagner ** Town of Wausaukee ** village of Crivitz ** Village of Wausaukee ** City of Niagara * Oconto County ** Town of Doty ** Town of Lakewood ** Town of Mountain ** Town of Riverview ** Town of Townsend * Shawano County ** Town of Almon ** Town of Aniwa ** Town of Bartelme ** Town of Birnamwood ** Town of Hutchins ** Town of Red Springs ** Town of Wittenberg ** Village of Birnamwood ** Village of Mattoon ** Village of Wittenberg }} |- style="height:3em" | 97th | 2005–2006 |- style="height:3em" | 98th | 2007–2008 |- style="height:3em" | rowspan="2" align=left | Jim Holperin | rowspan="2" {{Party shading/Democratic}} | Dem. | rowspan="2" | | 99th | 2009–2010 |- style="height:3em" | 100th | 2011–2012 |- style="height:3em" | rowspan="4" align=left | Tom Tiffany | rowspan="4" {{Party shading/Republican}} | Rep. | rowspan="4" | ''Elected to U.S. House in 2020.'' | 101st | 2013–2014 | rowspan="6" | frameless|center|300px Florence, Forest, Langlade, Lincoln, Menominee, Oneida & {{Collapsible list |title={{nowrap|part Marathon County}}, {{nowrap|northern Marinette County}}, {{nowrap|northern Oconto County}}, {{nowrap|part of Shawano County}}, {{nowrap|& most of Vilas County}}|titlestyle=background:transparent;text-align:center;padding-center:1.0em;font-size:85%;| * Marathon County ** Town of Berlin ** Town of Hamburg ** Town of Harrison ** Town of Hewitt ** Town of Plover * Marinette County ** Town of Amberg ** Town of Athelstane ** Town of Beaver ** Town of Beecher ** Town of Dunbar ** Town of Goodman ** Town of Lake ** Town of Middle Inlet ** Town of Niagara ** Town of Pembine ** Town of Porterfield ** Town of Silver Cliff ** Town of Stephenson ** Town of Wagner ** Town of Wausaukee ** Village of Crivitz ** Village of Wausaukee ** City of Niagara * Oconto County ** Town of Bagley ** Town of Brazeau ** Town of Breed ** Town of Chase ** Town of Doty ** Town of Gillett ** Town of How ** Town of Lakewood ** Town of Lena ** Town of Maple Valley ** Town of Morgan ** Town of Mountain ** Town of Oconto Falls ** Town of Riverview ** Town of Spruce ** Town of Townsend ** Town of Underhill ** Village of Lena ** Village of Suring ** City of Gillett ** City of Oconto Falls * Shawano County ** Town of Almon ** Town of Aniwa ** Town of Birnamwood ** Town of Green Valley ** Town of Hutchins ** Town of Washington ** Village of Aniwa ** Village of Birnamwood ** Village of Bowler ** Village of Cecil ** Village of Eland ** Village of Mattoon * Vilas County ** Town of Arbor Vitae ** Town of Boulder Junction ** Town of Cloverland ** Town of Conover ** Town of Land O' Lakes ** Town of Lincoln ** Town of Manitowish Waters ** Town of Phelps ** Town of Plum Lake ** Town of Presque Isle ** Town of St. Germain ** Town of Washington ** Town of Winchester ** City of Eagle River }} |- style="height:3em" | 102nd | 2015–2016 |- style="height:3em" | 103rd | 2017–2018 |- style="height:2em" | rowspan="2" | 104th | rowspan="2" | 2019–2020 |- style="height:1em" | colspan="3" | ''--Vacant--'' |- style="height:3em" | rowspan="3" align=left | Mary Felzkowski | rowspan="3" {{Party shading/Republican}} | Rep. | rowspan="3" | | 105th | 2021–2022 |- style="height:3em" | 106th | 2023–2024 | frameless|center|300px Florence, Forest, Langlade, Lincoln, Menominee, Oneida & part Marathon County, northern Marinette County, northern Oconto County, part of Shawano County, & most of Vilas County |- style="height:3em" | 107th | 2025–2026 | frameless|center|150px |}

==References== {{Reflist}}

==External links== * [https://docs.legis.wisconsin.gov/districts/senate/12 Senate District 12] at Wisconsin Legislature ** [https://docs.legis.wisconsin.gov/2023/legislators/senate/2417 Senator Mary Felzkowski (2023)] ** [https://docs.legis.wisconsin.gov/2021/legislators/senate/2249 Senator Mary Felzkowski (2021)] ** [https://docs.legis.wisconsin.gov/2019/legislators/senate/1922 Senator Thomas Tiffany (2019)] ** [https://docs.legis.wisconsin.gov/2017/legislators/senate/1528 Senator Thomas Tiffany (2017)]

Category:Wisconsin Senate districts Category:Florence County, Wisconsin Category:Forest County, Wisconsin Category:Langlade County, Wisconsin Category:Lincoln County, Wisconsin Category:Marathon County, Wisconsin Category:Marinette County, Wisconsin Category:Oconto County, Wisconsin Category:Oneida County, Wisconsin Category:Shawano County, Wisconsin Category:Vilas County, Wisconsin Category:1848 establishments in Wisconsin