| State: | Iowa |
| District: | 12 |
| Chamber: | Senate |
| Representative: | Amy Sinclair |
| Party: | Republican |
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]
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 district is also located in Iowa's 3rd congressional district, which is represented by U.S. Representative Zach Nunn.[3]
| Representative | Party | Dates | Residence | Notes | ||
|---|---|---|---|---|---|---|
| bgcolor= | Whig | 1846-1849 | Clinton County | |||
| bgcolor= | Democrat | 1850-1851 | Clinton County | |||
| bgcolor= | Whig | 1852-1853 | Washington, Iowa | |||
| bgcolor= | Whig | 1854-1855 | Keokuk, Iowa | |||
| bgcolor= | Democrat | 1856-1857 | Council Bluffs, Iowa | |||
| bgcolor= | Democrat | 1858-1859 | Council Bluffs, Iowa | |||
| bgcolor= | Republican | 1860-1861 | Monroe County | |||
| bgcolor= | Republican | 1862-1863 | Chariton, Iowa | |||
| bgcolor= | Republican | 1864-1865 | Wapello County | |||
| bgcolor= | Republican | 1866-1867 | Ottumwa, Iowa | |||
| bgcolor= | Republican | 1868-1871 | Jefferson County | |||
| bgcolor= | Republican | 1872-1877 | Fairfield, Iowa | |||
| bgcolor= | Democrat | 1878-1881 | Keokuk County | |||
| bgcolor= | Republican | 1882-1885 | Sigourney, Iowa | |||
| bgcolor= | Republican | 1886-1887 | Ottumwa, Iowa | |||
| bgcolor= | Republican | 1888-1889 | What Cheer, Iowa | |||
| bgcolor= | Democrat | 1890-1893 | Grinnell, Iowa | |||
| bgcolor= | Republican | 1894-1897 | What Cheer, Iowa | |||
| bgcolor= | Republican | 1898-1901 | Montezuma, Iowa | |||
| bgcolor= | Republican | 1902-1906 | Sigourney, Iowa | |||
| bgcolor= | Republican | 1907-1910 | Grinnell, Iowa | |||
| bgcolor= | Republican | 1911-1914 | Grinnell, Iowa | |||
| bgcolor= | Republican | 1915-1918 | Sigourney, Iowa | |||
| bgcolor= | Republican | 1919-1926 | Grinnell, Iowa | |||
| bgcolor= | Republican | 1927-1934 | Sigourney, Iowa | |||
| bgcolor= | Democrat | 1935-1938 | Poweshiek County | |||
| bgcolor= | Republican | 1939-1942 | Brooklyn, Iowa | |||
| bgcolor= | Republican | 1943-1950 | Sigourney, Iowa | |||
| bgcolor= | Republican | 1951-1958 | Poweshiek County | |||
| bgcolor= | 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] | |||||
| bgcolor= | Democrat | 1965-1966 | Pleasantville, Iowa | |||
| bgcolor= | Republican | 1967-1970 | Winterset, Iowa | Resigned from office due to moving out of his district. | ||
| bgcolor= | Republican | 1970 | Madison County | |||
| bgcolor= | Republican | 1971-1972 | Woodbury County | |||
| bgcolor= | Republican | 1973-1976 | Maquoketa, Iowa | |||
| bgcolor= | Republican | 1977-1982 | Cedar County | |||
| bgcolor= | Democrat | 1983-1984 | Waterloo, Iowa | |||
| bgcolor= | Republican | 1985-1990 | Cedar Falls, Iowa | |||
| bgcolor= | Republican | 1991-1994 | Waterloo, Iowa | Senator Slife died in office in 1994. | ||
| bgcolor= | Republican | 1994-2002 | Cedar Falls, Iowa | |||
| bgcolor= | Republican | 2003-2004 | Buchanan County | |||
| bgcolor= | Democrat | 2005-2012 | Arlington, Iowa | |||
| bgcolor= | Republican | 2013-2014 | Red Oak, Iowa | Senator Ernst was elected to the US Senate in 2014. | ||
| bgcolor= | Republican | 2015-2022 | Imogene, Iowa | |||
| bgcolor= | Republican | 2023-Present | Wayne County | |||
Source:[6]