# Connecticut's 12th State Senate district

Connecticut's 12th State Senate district elects one member of the Connecticut State Senate. The district consists of the towns of Branford, North Branford, Durham, Guilford, Killingworth, and Madison. Its current senator is Christine Cohen.
The district boundaries established after the 2010 census are the same as those established after the 2000 census.

## List of senators
### 1830 to 1900

| Senator | Party | Years of service | Hometown | Notes |
| Charles Hawley | Whig | 1830–1831 | Stamford | |
| Thaddeus Betts | Whig | 1831–1832 | Norwalk | |
| Charles Hawley | Whig | 1832–1836 | Stamford | |
| Benjamin Isaacs | | 1836–1837 | Norwalk | |
| Charles Hawley | Whig | 1837–1838 | Stamford | |
| Thomas B. Butler | Whig | 1838–1840 | Norwalk | |
| Joshua Ferris | Whig | 1840–1842 | Stamford | |
| Clark Bissell | Whig | 1842–1844 | Norwalk | |
| Darius Mead | | 1844–1846 | Greenwich | |
| Charles Marvin | Whig | 1846–1848 | Wilton | |
| Thomas B. Butler | Whig | 1848–1849 | Norwalk | Served as Senate President Pro Tempore |
| Joshua Ferris | Whig | 1849–1851 | Stamford | Served as Senate President Pro Tempore |
| Charles Marvin | Whig | 1851–1852 | Wilton | |
| Thomas B. Butler | Whig | 1852–1854 | Norwalk | |
| William T. Minor | Republican | 1854–1855 | Stamford | |
| Orris S. Ferry | Republican | 1855–1857 | Norwalk | |
| James H. Hoyt | Democratic | 1857–1858 | Stamford | |
| Julius Curtis | Republican | 1858–1859 | Stamford | |
| Matthew F. Merritt | | 1859–1860 | Stamford | |
| Julius Curtis | Republican | 1860–1861 | Stamford | |
| Aaron Homer Byington | Republican | 1861–1863 | Norwalk | |
| Morgan Morgans | Whig | 1863–1865 | Stamford | |
| Charles Ballard | | 1865–1867 | Darien | |
| William C. Street | | 1867–1869 | Norwalk | |
| Huested W. R. Hoyt | Republican | 1869–1870 | Greenwich | |
| Elbert A. Woodward | Democratic | 1870–1871 | South Norwalk | Fled the country in 1871 due to charges stemming from the Tammany Hall corruption scandal |
| Asa Woodward | | 1871–1873 | Norwalk | |
| Huested W. R. Hoyt | Republican | 1873–1874 | Greenwich | |
| Galen A. Carter | Democratic | 1874–1875 | Stamford | |
| Frederick Bruggerhof | Democratic | 1875–1877 | Darien | |
| Oliver Hoyt | Republican | 1877–1882 | Stamford | Served as Senate President Pro Tempore |
| Edwin L. Scofield | Republican | 1883–1884 | Stamford | |
| R. Jay Walsh | Republican | 1885–1888 | Greenwich | Served as Senate President Pro Tempore |
| Benjamin P. Mead | Republican | 1889–1892 | New Canaan | |
| Leander P. Jones | Republican | 1893–1894 | Greenwich | |
| George E. Lounsbury | Republican | 1895–1896 | Ridgefield | |
| Edwin O. Keeler | Republican | 1897–1900 | Norwalk | Served as Senate President Pro Tempore |

### 1900 to present

At this point redistricting caused Fairfield County to be represented in the Senate by the 25th and 26th district.
| Senators | Party | Years | District home |
| Arthur W. Marsden | Republican | 1911–1912 | Madison |
| Arthur W. Marsden | Republican | 1919–1920 | Madison |
| J. W. Sanford, Jr. | Republican | 1921–1922 | Hamden |
| Waldo S. Blakeslee | | 1931–1932 | North Haven |
| Roy C. Enquist | | 1939–1940 | Branford |
| Raymond Brock | | 1943–1946 | New Haven |
| Lucy Hammer | Republican | 1961–1973 | Branford |
| Stanley H. Page | Republican | 1973–1977 | Guilford |
| Barbara Reimer | Republican | 1977–1979 | Branford |
| Regina R. Smith | Democratic | 1979–1985 | Northford |
| Richard S. Eaton Sr. | Republican | 1985–1987 | Guilford |
| Thomas J. Sullivan, Jr. | Democratic | 1987–1991 | Guilford |
| William Aniskovich | Republican | 1991–2005 | Branford |
| Edward Meyer | Democratic | 2005–2015 | Guilford |
| Edward M. Kennedy Jr. | Democratic | 2015–2019 | Branford |
| Christine Cohen | Democratic | 2019–present | Guilford |