Iowa's 12th Senate district

Iowa's 12th State Senate district
Senator	Amy Sinclair R

The 12th District of the Iowa Senate is located in southern Iowa, and is currently composed of Adair, Clarke, Decatur, Lucas, Madison, and Wayne counties, as well as portions of Appanoose, Dallas, and Union counties. ^[1]

Current elected officials

Amy Sinclair is the senator currently representing the 12th District. ^[2]

The area of the 12th District contains two Iowa House of Representatives districts:

• The 23rd District (represented by Ray Sorensen)
• The 24th District (represented by Joel Fry)

The district is also located in Iowa's 3rd congressional district, which is represented by U.S. Representative Zach Nunn. ^[3]

List of representatives

^[4]

Representative	Party		Dates	Residence	Notes
Loring Wheeler		Whig	1846-1849	Clinton County
William Leffingwell		Democrat	1850-1851	Clinton County
Norman Everson		Whig	1852-1853	Washington, Iowa
Hiram Cleaver		Whig	1854-1855	Keokuk, Iowa
James Test		Democrat	1856-1857	Council Bluffs, Iowa
William H. M. Pusey		Democrat	1858-1859	Council Bluffs, Iowa
Daniel Anderson		Republican	1860-1861	Monroe County
Warren Dungan		Republican	1862-1863	Chariton, Iowa
Jacob Dixon		Republican	1864-1865	Wapello County
Edward Stiles		Republican	1866-1867	Ottumwa, Iowa
Abial Pierce		Republican	1868-1871	Jefferson County
Moses McCoid		Republican	1872-1877	Fairfield, Iowa
Sanford Harned		Democrat	1878-1881	Keokuk County
Cassius Brown		Republican	1882-1885	Sigourney, Iowa
Joseph Hutchison		Republican	1886-1887	Ottumwa, Iowa
James Dooley		Republican	1888-1889	What Cheer, Iowa
Joel Stewart		Democrat	1890-1893	Grinnell, Iowa
John Riggen		Republican	1894-1897	What Cheer, Iowa
William Robinson Lewis		Republican	1898-1901	Montezuma, Iowa
John Tinley Brooks		Republican	1902-1906	Sigourney, Iowa
Elbert Clark		Republican	1907-1910	Grinnell, Iowa
Henry Spaulding		Republican	1911-1914	Grinnell, Iowa
Charles Laffer		Republican	1915-1918	Sigourney, Iowa
Theodore Cessna		Republican	1919-1926	Grinnell, Iowa
Frank Beatty		Republican	1927-1934	Sigourney, Iowa
Eugene Mason		Democrat	1935-1938	Poweshiek County
John Edwin Talbott		Republican	1939-1942	Brooklyn, Iowa
Luke Vittetoe		Republican	1943-1950	Sigourney, Iowa
Wilbur Molison		Republican	1951-1958	Poweshiek County
C. Edwin Gilmour		Democrat	1959-1962	Grinnell, Iowa
			1963-1964		No senator from district 12 is listed on the Iowa Official Register for General Assembly 60. This is the combined result of redistricting and election cycles and affected multiple districts. [5]
Stanley Heaberlin		Democrat	1965-1966	Pleasantville, Iowa
Joseph Flatt		Republican	1967-1970	Winterset, Iowa	Resigned from office due to moving out of his district.
Glen Bortell		Republican	1970	Madison County
Alden Erskine		Republican	1971-1972	Woodbury County
Clifton Lamborn		Republican	1973-1976	Maquoketa, Iowa
Merlin Hulse		Republican	1977-1982	Cedar County
Ted J. Anderson		Democrat	1983-1984	Waterloo, Iowa
Joy Corning		Republican	1985-1990	Cedar Falls, Iowa
Harry Slife		Republican	1991-1994	Waterloo, Iowa	Senator Slife died in office in 1994.
Donald Redfern		Republican	1994-2002	Cedar Falls, Iowa
Kathleen Rehberg		Republican	2003-2004	Buchanan County
Brian Schoenjahn		Democrat	2005-2012	Arlington, Iowa
Joni Ernst		Republican	2013-2014	Red Oak, Iowa	Senator Ernst was elected to the US Senate in 2014.
Mark Costello		Republican	2015-2022	Imogene, Iowa
Amy Sinclair		Republican	2023-present	Wayne County

Historical district boundaries

Source: ^[6]

Map	Description	Years effective	Notes
	Clinton County Scott County	1846-1851	From 1846 to 1857, district numbering was not utilized by the Iowa State Legislature. This convention was added with the passing of the 1857 Iowa Constitution. Numbering of districts pre-1857 is done as a matter of historic convenience. [7]
	Louisa County Washington County	1852-1855
	Audubon County Buena Vista County Carroll County Calhoun County Cherokee County Clay County Crawford County Dickinson County Emmet County Harrison County Ida County Lyon County Monona County O'Brien County Osceola County Palo Alto County Plymouth County Pocahontas County Pottawattamie County Sac County Shelby County Sioux County Woodbury County	1856-1859	Lyon County would have been known as Buncombe County during this period.
	Lucas County Monroe County	1860-1863
	Wapello County	1864-1867
	Jefferson County	1868-1877
	Keokuk County	1878-1883
	Iowa County Keokuk County	1884-1885
	Wapello County	1886-1887
	Keokuk County Poweshiek County	1888-1962
	Marion County Warren County	1963-1966
	Adair County Cass County Madison County	1967-1970
	Woodbury County (partial)	1971-1972	In 1970, the Iowa Legislature passed an amendment to the Iowa Constitution setting forth the rules for legislative redistricting in order to abide by the rules established by the Reynolds v. Sims Supreme Court case. The first reapportionment map created by the Republican controlled legislature was deemed unconstitutional, but was still used for the 1970 election. [8]
	Cedar County Jackson County (partial) Johnson County (partial) Jones County (partial) Scott County (partial)	1973-1982
	Black Hawk County (partial)	1983-1992
	Black Hawk County (partial)	1993-2002
	Buchanan County Black Hawk County (partial) Barclay Township Big Creek Township Cedar Township Fox Township Poyner Township Spring Township Gilbertville La Porte City Clayton County Delaware County (partial) Coffins Grove Township Delaware Township Elk Township Honey Creek Township Oneida Township Richland Township Delaware Dundee Earlville Greeley Masonville Fayette County (partial) Fairfield Township Illyria Township Pleasant Valley Township Putnam Township Scott Township Smithfield Township Westfield Township Arlington Elgin Fairbank Fayette Wadena	2003-2012	[9]
	Fremont County Mills County Montgomery County Page County Ringgold County Taylor County	2013-2022
	Adair County Appanoose County (partial) Independence Township Johns Township Lincoln Township Plano Clarke County Dallas County (partial) Adams Township Colfax Township Union Township De Soto Earlham Redfield Decatur County Lucas County Union County (partial) Dodge Township Lincoln Township Jones Township New Hope Township Pleasant Township Lorimor Thayer	2023-present

See also

• Iowa General Assembly
• Iowa Senate

References

1. "District 12 Map" (PDF).
2. Agency, Iowa Legislative Services. "Iowa Legislature - Legislator List" . Retrieved July 15, 2016.
3. "Iowa Congressional Districts" (PDF). Iowa Legislative Services Agency. Retrieved July 15, 2016.
4. "Table of Iowa Senate District 5 Historic Senators".
5. "Iowa Legislature GA list".
6. "Iowa State Senate District 2 Historic Legislators".
7. "1846 Iowa Constitution" (PDF).
8. "Reapportionment in Iowa".
9. Iowa Senate District 12