List of United States senators from Pennsylvania

Current delegation

Bob Casey Jr. (D)

John Fetterman (D)

Pennsylvania ratified the United States Constitution on December 12, 1787, and elects its U.S. senators to class 1 and class 3. Officeholders are popularly elected, for a six-year term, beginning January 3. Elections are held the first Tuesday after November 1. Before 1914, they were chosen by the Pennsylvania General Assembly; before 1935, their terms began March 4. The state's current U.S. senators are Democrats Bob Casey Jr. (since 2007) and John Fetterman (since 2023). Arlen Specter was Pennsylvania's longest-serving senator (1981–2011).

## List of senators[edit]

Class 1

Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2000, 2006, 2012, and 2018. The next election will be in 2024.  | C |  Class 3

Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028.

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#  | Senator  | Party  | Dates in office  | Electoral history  | T | T | Electoral history  | Dates in office  | Party  | Senator  | #
1  |
William Maclay | Anti-
Admin. | Mar 4, 1789 –
Mar 3, 1791  | Elected in 1788.

Lost re-election.  | 1  | 1st | 1  | Elected in 1788.

Retired.  | Mar 4, 1789 –
Mar 3, 1795  | Pro-
Admin. |
Robert Morris | 1
Vacant | Mar 4, 1791 –
Dec 1, 1793  | Legislature failed to elect.  | 2  | 2nd
2  |
Albert Gallatin | Anti-
Admin. | Dec 2, 1793 –
Feb 28, 1794  | Elected to finish the vacant term.

Election voided.
3rd
Vacant | Mar 1, 1794 –
Apr 23, 1794  |
3  |
James Ross | Pro-
Admin. | Apr 24, 1794 –
Mar 3, 1803  | Elected to finish the vacant term that happened from 1791 to 1793.
Federalist | 4th | 2  | Elected in 1795.

Retired.  | Mar 4, 1795 –
Mar 3, 1801  | Federalist |
William Bingham | 2
Re-elected in 1797.

Retired.  | 3  | 5th
6th
7th | 3  | Elected in 1801.

Resigned to become Supervisor of Revenue of Pennsylvania.  | Mar 4, 1801 –
Jun 30, 1801  | Democratic-
Republican |
Peter Muhlenberg | 3
| Jun 30, 1801 –
Dec 17, 1801  | Vacant
Elected to finish Muhlenberg's term.

Retired.  | Dec 17, 1801 –
Mar 3, 1807  | Democratic-
Republican |
George Logan | 4
4  | Samuel Maclay | Democratic-
Republican | Mar 4, 1803 –
Jan 4, 1809  | Elected in 1802.

Resigned.  | 4  | 8th
9th
10th | 4  | Elected in 1806.

Retired.  | Mar 4, 1807 –
Mar 3, 1813  | Democratic-
Republican |
Andrew Gregg | 5
Vacant | Jan 4, 1809 –
Jan 9, 1809  | Vacant
5  |
Michael Leib | Democratic-
Republican | Jan 9, 1809 –
Feb 14, 1814  | Elected in 1809 to finish Maclay's term, having been elected to the next term.[1]
Elected in 1808.[2]

Resigned to become Postmaster of Philadelphia.  | 5  | 11th
12th
13th | 5  | Elected in 1812.[3]

Retired.  | Mar 4, 1813 –
Mar 3, 1819  | Democratic-
Republican |
Abner Lacock | 6
Vacant | Feb 14, 1814 –
Feb 24, 1814  |
6  |
Jonathan Roberts | Democratic-
Republican | Feb 24, 1814 –
Mar 3, 1821  | Elected to finish Leib's term.
Re-elected in late 1814.  | 6  | 14th
15th
16th | 6  | Elected in 1818.

Retired.  | Mar 4, 1819 –
Mar 3, 1825  | Democratic-
Republican |
Walter Lowrie | 7
Vacant | Mar 4, 1821 –
Dec 10, 1821  | Legislature failed to elect.  | 7  | 17th
7  |
William Findlay | Democratic-
Republican | Dec 10, 1821 –
Mar 3, 1827  | Elected late in 1821.

Retired.
18th
Jacksonian | 19th | 7  | Elected in 1825.

Lost re-election.  | Mar 4, 1825 –
Mar 3, 1831  | National
Republican |
William Marks | 8
8  |
Isaac D. Barnard | Jacksonian | Mar 4, 1827 –
Dec 6, 1831  | Elected in 1826.

Resigned to due ill health.  | 8  | 20th
21st
22nd | 8  | Elected in 1830.

Resigned to become U.S. Minister to Russia.  | Mar 4, 1831 –
Jun 30, 1834  | Jacksonian |
William Wilkins | 9
Vacant | Dec 6, 1831 –
Dec 13, 1831  |
9  |
George M. Dallas | Jacksonian | Dec 13, 1831 –
Mar 3, 1833  | Elected to finish Barnard's term.

Retired.
Vacant | Mar 4, 1833 –
Dec 7, 1833  | Legislature failed to elect.  | 9  | 23rd
10  |
Samuel McKean | Jacksonian | Dec 7, 1833 –
Mar 3, 1839  | Elected late in 1833.
| Jun 30, 1834 –
Dec 6, 1834  | Vacant
Elected to finish Wilkins's term.  | Dec 6, 1834 –
Mar 5, 1845  | Jacksonian |
James Buchanan | 10
24th
Democratic  | 25th | 9  | Re-elected in 1836.  | Democratic
Vacant | Mar 4, 1839 –
Jan 14, 1840  | Legislature failed to elect.  | 10  | 26th
11  |
Daniel Sturgeon | Democratic | Jan 14, 1840 –
Mar 3, 1851  | Elected late in 1840.
27th
28th | 10  | Re-elected in 1843.

Resigned to become U.S. Secretary of State.
Re-elected in 1845.

Retired.  | 11  | 29th
| Mar 5, 1845 –
Mar 13, 1845  | Vacant
Elected in 1845 to finish Buchanan's term.

Retired.  | Mar 13, 1845 –
Mar 3, 1849  | Democratic |
Simon Cameron | 11
30th
31st | 11  | Elected in 1849.  | Mar 4, 1849 –
Mar 3, 1855  | Whig |
James Cooper | 12
12  |
Richard Brodhead | Democratic | Mar 4, 1851 –
Mar 3, 1857  | Elected in 1851.  | 12  | 32nd
33rd
34th | 12  | Legislature failed to elect.  | Mar 4, 1855 –
Jan 14, 1856  | Vacant
Elected late in 1856.

Retired.  | Jan 14, 1856 –
Mar 3, 1861  | Democratic |
William Bigler | 13
13  |
Simon Cameron | Republican | Mar 4, 1857 –
Mar 4, 1861  | Elected in 1857.

Resigned to become U.S. Secretary of War.  | 13  | 35th
36th
Vacant | Mar 4, 1861 –
Mar 14, 1861  |  | 37th | 13  | Elected in 1861.

Lost re-election.  | Mar 4, 1861 –
Mar 3, 1867  | Republican |
Edgar Cowan | 14
14  |
David Wilmot | Republican | Mar 14, 1861 –
Mar 3, 1863  | Elected in 1861 to finish Cameron's term.

Retired.
15  |
Charles R. Buckalew | Democratic | Mar 4, 1863 –
Mar 3, 1869  | Elected in 1863.  | 14  | 38th
39th
40th | 14  | Elected in 1867.  | Mar 4, 1867 –
Mar 12, 1877  | Republican |
Simon Cameron | 15
16  |
John Scott | Republican | Mar 4, 1869 –
Mar 3, 1875  | Elected in 1869.

Retired.  | 15  | 41st
42nd
43rd | 15  | Re-elected in 1873.

Resigned.
17  |
William A. Wallace | Democratic | Mar 4, 1875 –
Mar 3, 1881  | Elected in 1875.

Lost re-election.  | 16  | 44th
45th
| Mar 12, 1877 –
Mar 20, 1877  | Vacant
Elected in 1877 to finish his father's term.  | Mar 20, 1877 –
Mar 3, 1897  | Republican |
J. Donald Cameron | 16
46th | 16  | Re-elected in 1879.
18  |
John I. Mitchell | Republican | Mar 4, 1881 –
Mar 3, 1887  | Elected in 1881.  | 17  | 47th
48th
49th | 17  | Re-elected in 1885.
19  |
Matthew Quay | Republican | Mar 4, 1887 –
Mar 3, 1899  | Elected in early 1887.  | 18  | 50th
51st
52nd | 18  | Re-elected in 1891.

Retired.
Re-elected in 1893.

Legislature failed to re-elect.  | 19  | 53rd
54th
55th | 19  | Elected in 1897.  | Mar 4, 1897 –
Dec 31, 1921  | Republican |
Boies Penrose | 17
Vacant | Mar 4, 1899 –
Jan 16, 1901  | Quay was appointed to continue the term, but the Senate rejected his appointment.  | 20  | 56th

Matthew Quay | Republican | Jan 16, 1901 –
May 28, 1904  | Elected late in 1901.

Died.
57th
58th | 20  | Re-elected in 1903.
20  |
Philander C. Knox | Republican | Jun 10, 1904 –
Mar 3, 1909  | Appointed to continue Quay's term.

Elected in 1905 to finish Quay's term.[4]
Re-elected in 1905.[5]

Resigned to become U.S. Secretary of State.  | 21  | 59th
60th
Vacant | Mar 4, 1909 –
Mar 17, 1909  |  | 61st | 21  | Re-elected in 1909.
21  |
George T. Oliver | Republican | Mar 17, 1909 –
Mar 3, 1917  | Elected to finish Knox's term
Re-elected in 1911.

Retired.  | 22  | 62nd
63rd
64th | 22  | Re-elected in 1914.
22  |
Philander C. Knox | Republican | Mar 4, 1917 –
Oct 12, 1921  | Elected in 1916.

Died.  | 23  | 65th
66th
67th | 23  | Re-elected in 1920.

Died.
Vacant | Oct 12, 1921 –
Oct 24, 1921  |
23  |
William E. Crow | Republican | Oct 24, 1921 –
Aug 2, 1922  | Appointed to continue Knox's term.

Died.
| Dec 31, 1921 –
Jan 9, 1922  | Vacant
Appointed to continue Penrose's term.

Elected to finish Penrose's term.

Lost renomination.  | Jan 9, 1922 –
Mar 3, 1927  | Republican |
George W. Pepper | 18
Vacant | Aug 2, 1922 –
Aug 8, 1922  |
24  |
David A. Reed | Republican | Aug 8, 1922 –
Jan 3, 1935  | Appointed to continue Knox's term.

Elected to finish Knox's term.
Elected in 1922.  | 24  | 68th
69th
70th | 24  | William Scott Vare (R) was elected in 1926, but the Governor refused to certify the election and the Senate refused to qualify him.  | Mar 4, 1927 –
Dec 9, 1929  | Vacant
Re-elected in 1928.

Lost re-election.  | 25  | 71st
Appointed to continue Vare's term.

Lost nomination to finish Vare's term.  | Dec 11, 1929 –
Dec 1, 1930  | Republican |
Joseph R. Grundy | 19
Elected in 1930 to finish Vare's term | Dec 2, 1930 –
Jan 3, 1945  | Republican |
James J. Davis | 20
72nd
73rd | 25  | Re-elected in 1932.
25  |
Joe Guffey | Democratic | Jan 3, 1935 –
Jan 3, 1947  | Elected in 1934.  | 26  | 74th
75th
76th | 26  | Re-elected in 1938.

Lost re-election.
Re-elected in 1940.

Lost re-election.  | 27  | 77th
78th
79th | 27  | Elected in 1944.

Lost re-election.  | Jan 3, 1945 –
Jan 3, 1951  | Democratic |
Francis Myers | 21
26  |
Edward Martin | Republican | Jan 3, 1947 –
Jan 3, 1959  | Elected in 1946.  | 28  | 80th
81st
82nd | 28  | Elected in 1950.

Lost re-election.  | Jan 3, 1951 –
Jan 3, 1957  | Republican |
James H. Duff | 22
Re-elected in 1952.

Retired.  | 29  | 83rd
84th
85th | 29  | Elected in 1956.  | Jan 3, 1957 –
Jan 3, 1969  | Democratic |
Joseph S. Clark Jr. | 23
27  |
Hugh Scott | Republican | Jan 3, 1959 –
Jan 3, 1977  | Elected in 1958.  | 30  | 86th
87th
88th | 30  | Re-elected in 1962.

Lost re-election.
Re-elected in 1964.  | 31  | 89th
90th
91st | 31  | Elected in 1968.  | Jan 3, 1969 –
Jan 3, 1981  | Republican |
Richard Schweiker | 24
Re-elected in 1970.

Retired.  | 32  | 92nd
93rd
94th | 32  | Re-elected in 1974.

Retired.
28  |
John Heinz | Republican | Jan 3, 1977 –
Apr 4, 1991  | Elected in 1976.  | 33  | 95th
96th
97th | 33  | Elected in 1980.  | Jan 3, 1981 –
Jan 3, 2011  | Republican |
Arlen Specter | 25
Re-elected in 1982.  | 34  | 98th
99th
100th | 34  | Re-elected in 1986.
Re-elected in 1988.

Died.  | 35  | 101st
102nd
Vacant | Apr 4, 1991 –
May 9, 1991  |
29  |
Harris Wofford | Democratic | May 9, 1991 –
Jan 3, 1995  | Appointed to continue Heinz's term.

Elected to finish Heinz's term.

Lost re-election.
103rd | 35  | Re-elected in 1992.
30  |
Rick Santorum | Republican | Jan 3, 1995 –
Jan 3, 2007  | Elected in 1994.  | 36  | 104th
105th
106th | 36  | Re-elected in 1998.
Re-elected in 2000.

Lost re-election.  | 37  | 107th
108th
109th | 37  | Re-elected in 2004.

Changed party on Apr 28, 2009.

Lost renomination.
31  |
Bob Casey Jr. | Democratic | Jan 3, 2007 –
present  | Elected in 2006.  | 38  | 110th
111th
Democratic
112th | 38  | Elected in 2010.  | Jan 3, 2011 –
Jan 3, 2023  | Republican |
Pat Toomey | 26
Re-elected in 2012.  | 39  | 113th
114th
115th | 39  | Re-elected in 2016.

Retired.
Re-elected in 2018.  | 40  | 116th
117th
118th | 40  | Elected in 2022.  | Jan 3, 2023 –
present | Democratic |
John Fetterman | 27
To be determined in the 2024 election.  | 41  | 119th
120th
121st | 41  | To be determined in the 2028 election.
#  | Senator  | Party  | Years in office  | Electoral history  | T | C | T | Electoral history  | Years in office  | Party  | Senator  | #
Class 1 |  Class 3

## Notes[edit]

1. ^ "Pennsylvania 1809 U.S. Senate, Special". Tufts Digital Collations and Archives. A New Nation Votes: American Election Returns 1787–1825. Tufts University. Retrieved February 3, 2018., citing Journal of the Pennsylvania House of Representatives, 1808, pp. 174–176.
2. ^ "U.S. Senate Election - 13 Dec 1808" (PDF). Wilkes University. Retrieved December 21, 2012.
3. ^ "Pennsylvania 1812 U.S. Senate". Tufts Digital Collations and Archives. A New Nation Votes: American Election Returns 1787–1825. Tufts University. Retrieved February 23, 2018., citing Journal of the Pennsylvania State Senate, 1812, pp. 41–43.
4. ^ Byrd, p. 159.
5. ^ The World Almanac and Encyclopedia 1906. New York: The Press Publishing Co. New York World. 1905. p. 108.

## References[edit]

* Byrd, Robert C. (October 1, 1993). Wolff, Wendy (ed.). The Senate, 1789-1989: Historical Statistics, 1789-1992. United States Senate Historical Office (volume 4 Bicentennial ed.). Washington, D.C.: U.S. Government Printing Office. ISBN 9780160632563.

## See also[edit]

* United States portal
* Pennsylvania portal
* Politics portal

* List of United States representatives from Pennsylvania
* List of United States Senate elections in Pennsylvania
* United States congressional delegations from Pennsylvania

## External links[edit]

* Members of Congress from Pennsylvania, govtrack.us
* U.S. Senate members from Pennsylvania, civil.services

* v
* t
* e

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
* Fetterman

Notes|

† Never officially seated

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Obsolete|

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* Lists of former House members
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Pennsylvania's current delegation to the United States Congress

Senators|

* ▌Bob Casey Jr. (D)
* ▌John Fetterman (D)

Representatives
(ordered by district)|

* ▌Brian Fitzpatrick (R)
* ▌Brendan Boyle (D)
* ▌Dwight Evans (D)
* ▌Madeleine Dean (D)
* ▌Mary Gay Scanlon (D)
* ▌Chrissy Houlahan (D)
* ▌Susan Wild (D)
* ▌Matt Cartwright (D)
* ▌Dan Meuser (R)
* ▌Scott Perry (R)
* ▌Lloyd Smucker (R)
* ▌Summer Lee (D)
* ▌John Joyce (R)
* ▌Guy Reschenthaler (R)
* ▌Glenn Thompson (R)
* ▌Mike Kelly (R)
* ▌Chris Deluzio (D)

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