List of United States Senate elections in Pennsylvania

Elections in Pennsylvania
Federal government Presidential elections 1789 1792 1796 1796 1800 1804 1808 1812 1816 1820 1824 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 United States Senate elections Class One 1788 1793 1794 1797 1802 1808 February 1814 1814 1820-21 1826 1831 1832-33 1840 1845 1851 1857 1861 1863 1869 1875 1881 1887 1893 1901 1905 1909 1911 1916 1922 1928 1934 1940 1946 1952 1958 1964 1970 1976 1982 1988 1991 1994 2000 2006 2012 Class Three 1788 1795 1801 December 1801 1806 1812 1818 1824–25 1830 1834 1836 1843 1845 1849 1856 1861 1867 1873 1877 1879 1885 1891 1897 1903 1909 1914 1920 1922 1926 1930 1932 1938 1944 1950 1956 1962 1968 1974 1980 1986 1992 1998 2004 2010 2016 House of Representatives elections 2000 2002 2004 2006 2008 2010 2012 2014 2016
State government Gubernatorial elections 1790 1793 1796 1799 1802 1805 1808 1811 1814 1817 1820 1823 1826 1829 1832 1835 1838 1841 1844 1860 1898 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 Lieutenant gubernatorial elections 1998 2002 2006 2010 2014 Attorney General elections 2000 2004 2008 · 2012 2016 Auditor General elections 2000 2004 2008 2012 State Treasurer elections 2000 2004 2008 2012 State Senate elections 2000 2002 2004 2006 2008 2010 2012 2014 2016 State House Elections 2000 2002 2004 2006 2008 2010 2012 2014
Elections by year State elections 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2014 2015 2016
Philadelphia Mayoral elections 1951 1955 1959 1963 1967 1971 1975 1979 1983 1987 1991 1995 1999 2003 2007 2011 2015 Other municipal elections 1953 1957 1961 1965 1969 1973 1977 1981 1985 1989 1993 1997 2001 2005 2009 2013 2017
Pittsburgh Mayoral elections 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
Lancaster Mayoral elections 2009

United States Senate elections in Pennsylvania occur when voters in the U.S. Commonwealth of Pennsylvania select an individual to represent the state in the United States Senate in either of the state's two seats allotted by the U.S. Constitution. Regularly scheduled general elections occur on Election Day, coinciding with various other federal, statewide, and local races.

Per the original text of the U.S. Constitution, each state was allotted two U.S. Senators selected by the state legislature for staggered six-year terms. After the election of the founding members of the U.S. Senate in 1788, the Senate was divided into three groups, or "classes" (Class I, Class II, and Class III) to stagger the six-year terms of its members. Per Article I, Section 3, Clause 2 of the Constitution, the founding members of Class I would serve two years, Class II four years, and Class III six years. All Senators elected thereafter would serve full six-year terms such that one-third of the Senate would be up for re-election every two years.^[1] Pennsylvania was assigned a Class I seat and Class III seat.^[2][3] Since the passage of the 17th Amendment to the Constitution in 1913, U.S. Senators are elected directly to six-year terms by the voters of each state at the general election held on Election Day. Special elections may be held to fill mid-term vacancies by electing an individual to serve the remainder of the unexpired term.^[4] The next Class I U.S. Senate election in Pennsylvania is scheduled for November 6, 2018, and the next Class III election in Pennsylvania is scheduled for November 8, 2022.

The list below contains election returns from all eighteen Class I and twenty Class III post-17th Amendment U.S. Senate elections in Pennsylvania, including special elections, sorted by year and beginning with the first in 1914 and the most recent in 2012. Incumbent Senators are listed as well as elected Senators and runner(s)-up in each election, including major third-party candidates (garnering 5% or more of the popular vote). Parties are color-coded to the left of a Senator's or candidate's name according to the key below. The popular vote and percentage margins listed in the "Margin" column are the differences between the total votes received and percentage of the popular vote received by the top two finishers in the corresponding election (i.e. the margin-of-victory of an elected Senator over the nearest competitor).

List of elections

Parties^{[note 1]}

  Independent   Democratic   Republican   Prohibition   Progressive Party (1924)   Progressive Party (1912)

Class I

County-level results of previous two Class I Senate elections

2006 election, between Bob Casey, Jr. (blue) and Rick Santorum (red)

2012 election, between Bob Casey, Jr. (blue) and Tom Smith (red)

Note: Asterisk (*) next to year denotes a special election.

Class III

County-level results of previous two Class III Senate elections

2010 election, between Pat Toomey (red) and Joe Sestak (blue)

2016 election, between Pat Toomey (red) and Katie McGinty (blue)

Note: Asterisk (*) next to year denotes a special election.

Notes

Graphs of results

Class I results from 1916 to 2012

Stacked bar graph with percentage of vote won by each party in Class I elections from 1916 to 2012. Asterisk (*) next to year denotes a special election.

Class III results from 1914 to 2010

Stacked bar graph with percentage of vote won by each party in Class III elections from 1914 to 2010. Asterisk (*) next to year denotes a special election.

See also

• List of United States Senators from Pennsylvania
• List of Pennsylvania gubernatorial elections
• List of United States presidential elections in Pennsylvania
• Elections in Pennsylvania
• Government of Pennsylvania

References

External links

• Pennsylvania Department of State Election Returns Portal
• Pennsylvania Senatorial Election Returns (1789-2006) from the Wilkes University Election Statistics Project
• Pennsylvania Elections at Ballotpedia

United States Senators from Pennsylvania
Class 1	W. Maclay Gallatin Ross S. Maclay Leib Roberts Findlay Barnard Dallas McKean Sturgeon Brodhead S. Cameron Wilmot Buckalew J. Scott Wallace Mitchell Quay Knox Oliver Knox Crow Reed Guffey Martin H. Scott Heinz Wofford Santorum Casey
Class 3	Morris Bingham Muhlenberg Logan Gregg Lacock Lowrie Marks Wilkins Buchanan S. Cameron Cooper Bigler Cowan S. Cameron J. Cameron Penrose Pepper Vare† Grundy Davis Myers Duff Clark Schweiker Specter Toomey
Notes	† Never officially seated.

Commonwealth of Pennsylvania
Harrisburg (capital)
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