1866 Pennsylvania gubernatorial election

← 1863 October 9, 1866 (1866-10-09) 1869 →

Nominee John W. Geary Hiester Clymer Party Republican Democratic Popular vote 307,274 290,096 Percentage 51.4% 48.6%

County results Geary:      50–60%      60–70%      70–80% Clymer:      50–60%      60–70%      70–80%

Governor before election Andrew Gregg Curtin Republican Elected Governor John W. Geary Republican

Elections in Pennsylvania
Federal government U.S. President 1789 1792 1796 1800 1804 1808 1812 1816 1820 1824 1828 1832 1836 1840 1844 1848 1852 1856 1860 1864 1868 1872 1876 1880 1884 1888 1892 1896 1900 1904 1908 1912 1916 1920 1924 1928 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 2020 2024 Presidential primaries Democratic 2000 2004 2008 2016 2020 2024 Republican 2008 2016 2020 2024 U.S. Senate 1788 1791 1793 sp 1794 sp 1795 1796 1797 1801 1801 sp 1802 1806 1808 1808 sp 1809 sp 1812 1814 1814 sp 1818 1820 1824 1826 1830 1831 sp 1832 1834 sp 1836 1840 sp 1843 1845 1845 sp 1849 1851 1856 1857 1861 1861 sp 1863 1867 1869 1873 1875 1877 sp 1879 1881 1885 1887 1891 1893 1897 1899 1901 sp 1903 1905 1905 sp 1908 1909 1909 sp 1911 1914 1916 1920 1922 1922 sp 1926 1928 1930 sp 1932 1934 1938 1940 1944 1946 1950 1952 1956 1958 1962 1964 1968 1970 1974 1976 1980 1982 1986 1988 1991 sp 1992 1994 1998 2000 2004 2006 2010 2012 2016 2018 2022 2024 2028 U.S. House of Representatives 1788 1791 1792 1794 1796 5th sp 1797 5th sp 1798 1st sp 4th sp 1800 8th sp 1801 4th sp 8th sp 12th sp 1802 1804 10th sp 1805 4th sp 11th sp 1806 1st sp 1808 1st sp 1809 1st sp 1810 1812 1813 3rd sp 5th sp 7th sp 13th sp 15th sp 1814 2nd sp 3rd sp 1815 1st sp 3rd sp 9th sp 1816 9th sp 1817 10th sp 1818 4th sp 6th sp 1820 5th sp 7th sp 1821 5th sp 10th sp 1822 1st sp 6th sp 7th sp 14th sp 1824 8th sp 13th sp 1825 16th sp 1826 2nd sp 7th sp 13th sp 18th sp 1827 2nd sp 1828 1829 8th sp 16th sp 1830 1831 11th sp 1832 1833 1st sp 1834 1836 13th sp 24th sp 1837 3rd sp 1838 9th sp 1839 14th sp 1840 13th sp 22nd sp 1841 2nd sp 13th sp 20th sp 18th sp Jun Dec 1842 17th sp 21st sp 1843 1844 12th sp 13th sp 21st sp 1846 1848 6th sp 1850 11th sp 15th sp 1852 1854 8th sp 1856 1857 12th sp 1858 8th sp 1860 8th sp 1861 2nd sp 12th sp 1862 7th sp 1864 1866 1867 12th sp 1868 9th sp 20th sp 1870 1872 13th sp 1874 23rd sp 1876 12th sp 1878 1880 1882 1884 19th sp 1885 19th sp 1886 1888 1890 3rd sp 4th sp 1892 1893 2nd sp 8th sp 1894 at-large sp 1895 15th sp 1896 1897 25th sp 1898 23rd sp 1899 9th sp 1900 5th sp 1901 10th sp 1902 17th sp 1903 4th sp 1904 3rd sp 1906 2nd sp 3rd sp 12th sp 1907 2nd sp 1908 1910 1911 2nd sp 14th sp 1912 1st sp 1914 1916 1917 28th sp 1918 1919 22nd sp 1920 3rd sp 1921 at-large sp 1922 1924 1926 1927 1st sp 1928 8th sp 1929 12th sp 1930 1931 2nd sp 1932 6th sp 18th sp 20th sp 1933 9th sp 1934 1936 1937 18th sp 1938 1939 4th sp 1940 1941 15th sp 1942 11th sp 12th sp 33rd sp 1943 2nd sp 23rd sp 1944 2nd sp 17th sp 1946 10th sp 23rd sp 33rd sp 1947 8th sp 1948 1949 22nd sp 26th sp 1950 1951 8th sp 14th sp 33rd sp 1952 1954 1956 2nd sp 30th sp 1957 13th sp 1958 4th sp 21st sp 1960 17th sp 18th sp 1961 16th sp 1962 1963 15th sp 23rd sp 1964 5th sp 1966 1968 1970 9th sp 1971 18th sp 1972 27th sp 1974 12th sp 1976 1st sp 1978 1980 11th sp 12th sp 1981 3rd sp 1982 1984 1986 1988 1990 1991 2nd sp 1992 1994 1996 1998 1st sp 2000 2001 9th sp 2002 2004 2006 2008 2010 12th sp 2012 2014 2016 2nd sp 2018 7th sp 15th sp 18th sp 2019 12th sp 2020 2022 2024
State government Governor 1790 1793 1796 1799 1802 1805 1808 1811 1814 1817 1820 1823 1826 1829 1832 1835 1838 1841 1844 1847 1848 1851 1854 1857 1860 1863 1866 1869 1872 1875 1878 1882 1886 1890 1894 1898 1902 1906 1910 1914 1918 1922 1926 1930 1934 1938 1942 1946 1950 1954 1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 2014 2018 2022 2026 Lieutenant Governor 1874 1878 1882 1886 1890 1894 1898 1902 1906 1910 1914 1918 1922 1926 1930 1934 1938 1942 1946 1950 1954 1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 2014 2018 2022 Attorney General 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 2020 2024 Auditor General 2000 2004 2008 2012 2016 2020 2024 State Treasurer 2000 2004 2008 2012 2016 2020 2024 State Senate 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 State House of Representatives 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024
Elections by year State elections 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Philadelphia Mayoral elections 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1856 1858 1860 1862 1865 1868 1871 1874 1877 1881 1884 1887 1891 1895 1899 1903 1907 1911 1915 1919 1923 1927 1931 1935 1939 1943 1947 1951 1955 1959 1963 1967 1971 1975 1979 1983 1987 1991 1995 1999 2003 2007 2011 2015 2019 2023 City Council elections 2015 2019 2022–23 sp. 2023 Other municipal elections 1951 1953 1955 1957 1959 1961 2023
Pittsburgh Mayors 1909 1913 1917 1921 1925 1929 1933 1937 1941 1945 1949 1953 1957 1959 1961 1965 1969 1973 1977 1981 1985 1989 1993 1997 2001 2005 2007 2009 2013 2017 2021
Allentown Mayors 1977 1981 1985 1989 1993 1997 2001 2005 2009 2013 2017 2019 sp 2021
Lancaster Mayors 2009 2017 2021
Harrisburg Mayors 1969 1973 1977 1981 1985 1989 1993 1997 2001 2005 2009 2013 2017 2021
Government

The 1866 Pennsylvania gubernatorial election occurred on October 9, 1866. Incumbent governor Andrew Gregg Curtin, a Republican, was not running for re-election.

Republican candidate John W. Geary defeated Democratic candidate Hiester Clymer to become Governor of Pennsylvania.