| State: | Pennsylvania |
| District: | 4 |
| Chamber: | Senate |
| Representative: | Arthur L. Haywood III |
| Party: | Democratic |
| Residence: | Cheltenham Township |
| Population: | 268,248 |
| Population Year: | 2021 |
Pennsylvania State Senate District 4 includes parts of Montgomery County and Philadelphia County. It is currently represented by Democrat Arthur L. Haywood III.
The district includes the following areas:[1]
| Representative[2] | Party | Years | District home | Note | |
|---|---|---|---|---|---|
| John Hopkins | Federalist | 1813 - 1817 | |||
| Charles Smith | Federalist | 1815 - 1817 | |||
| Jacob Grosh | Federalist | 1817 - 1821 | |||
| Molton Cropper Rogers | Democratic-Republican | 1819 - 1820 | |||
| Edward Coleman | Federalist | 1821 - 1823 | |||
| Democratic-Republican | 1821 - 1825 | U.S. Senator for Pennsylvania from 1827 to 1831[3] | |||
| Joshua Hunt | Federalist | 1827 - 1829 | |||
| William Jackson | Anti-Masonic | 1831 - 1833 | |||
| William Tennent Rogers | Democratic | 1831 - 1839 | |||
| George C. Smith | Anti-Masonic | 1833 - 1835 | |||
| Anti-Masonic | 1835 - 1836 | U.S. Representative for Pennsylvania's 4th congressional district from 1839 to 1843[4] | |||
| Republican | 1841 - 1842 | U.S. Representative for Pennsylvania's 8th congressional district from 1829 to 1833[5] | |||
| William Williamson | Whig | 1847 - 1848 | |||
| Hugh Jones Brooke | Whig | 1849 - 1852 | Pennsylvania State Senator for the 5th district from 1871 to 1872[6] | ||
| Democratic | 1851 - 1853 | U.S. Representative for Pennsylvania's 15th district from 1863 to 1865, U.S. Representative for Pennsylvania's 16th district from 1861 to 1863, Treasurer of Pennsylvania from 1854 to 1855, Pennsylvania State Senator for the 1st district in 1843, Pennsylvania State Representatives in 1840[7] | |||
| Whig | 1851 - 1854 | ||||
| James J. Lewis | Whig | 1855 - 1856 | |||
| Mahlon Yardley | Republican | 1859 - 1861 | |||
| William Kinsey | Democratic | 1863 - 1864 | |||
| George C. Connell | Republican | 1865 - 1870 | |||
| Henry Wolf Gray | Republican | 1871 - 1872 | |||
| Republican | 1873 - 1874 | Pennsylvania State Representative from 1858 to 1859 and 1865 to 1866. Pennsylvania State Senator for the 18th district from 1861 to 1862[8] | |||
| Horatio Gates Jones | Republican | 1875 - 1881 | |||
| John J. MacFarlane | Republican | 1883 - 1889 | |||
| Republican | 1891 - 1897 | ||||
| J. Bayard Henry | Republican | 1899 - 1901 | |||
| John T. Harrison | Republican | 1903 - 1904 | |||
| Jesse S. Shepard | Republican | 1903 - 1905 | |||
| Ernest Leigh Tustin | Republican | 1907 - 1909 | |||
| John Oscar Sheatz | Republican | 1913 - 1914 | |||
| Edward W. Patton | Republican | 1915 - 1925 | |||
| Bertram G. Frazier | Republican | 1929 - 1949 | |||
| Democratic | 1935 - 1958 | ||||
| Democratic | 1958 - 1968 | Moved to 8th senatorial district and served from 1969 to 1974[9] | |||
| Democratic | 1969 - 1970 | ||||
| Democratic | 1971 - 1980 | U.S. Representative for Pennsylvania's 3rd district from 1981 to 1983[10] | |||
| Republican | 1981 - 1990 | Pennsylvania State Representative for the 199th district from 1979 to 1982[11] | |||
| Democratic | 1991 - 2005 | Elected to represent Pennsylvania's 13th congressional district on November 2, 2004.[12] | |||
| Democratic | 2005 - 2014 | Elected May 17, 2005 to fill vacancy; lost 2014 primary election, resigned after being charged with a felony for using campaign staff and state resources to plan a fundraiser.[13] | |||
| Democratic | 2015 - present | Incumbent |