1812–13 United States Senate elections#South Carolina

{{Infobox election

| election_name = 1812–13 United States Senate elections

| country = United States

| flag_year = 1795

| type = legislative

| ongoing = no

| previous_election = 1810–11 United States Senate elections

| previous_year = {{Nowrap|1810 & 1811}}

| next_election = 1814–15 United States Senate elections

| next_year = {{Nowrap|1814 & 1815}}

| seats_for_election = 12 of the 36 seats in the United States Senate (plus special elections)

| majority_seats = 19

| election_date = Dates vary by state

| image_size = 100px

| 1blank = Seats up

| image1 =

| party1 = Democratic-Republican Party

| last_election1 = 27 seats

| seats_before1 = 30

| seats1 = 8

| seats_after1 = 28

| seat_change1 = {{decrease}} 2

| 1data1 = 10

| image2 =

| party2 = Federalist Party

| last_election2 = 7 seats

| seats_before2 = 6

| seats2 = 4

| seats_after2 = 8

| seat_change2 = {{increase}} 2

| 1data2 = 2

| title = Majority Party

| before_election =

| before_party = Democratic-Republican Party

| after_election =

| after_party = Democratic-Republican Party

| map_image = File:1812senatemap.svg

| map_caption = Results:
{{Legend0|#f2bfa6|Federalist hold}} {{legend0|#e27036|Federalist gain}}
{{Legend0|#bef3be|Dem-Republican hold}} {{legend0|#008000|Dem-Republican gain}}
{{Legend0|#000000ff|Legislature Failed To Elect}}

}}

The 1812–13 United States Senate elections were held on various dates in various states, coinciding with President James Madison's re-election. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1812 and 1813, and a seat may have been filled months late or remained vacant due to legislative deadlock.{{cite web|url=https://www.archives.gov/milestone-documents/17th-amendment|title=17th Amendment to the U.S. Constitution: Direct Election of U.S. Senators (1913)|website=National Archives and Records Administration|date=February 8, 2022}} In these elections, terms were up for the senators in Class 3.

The Democratic-Republican Party lost two seats but still retained an overwhelming Senate majority. As in recent elections, the minority Federalists had gone into the elections with such a small share of Senate seats (6 out of 36, or 16.7%) that if they had won every one of the elections, they would still not have controlled a majority.

Change in composition

= Before the elections =

Composition after September 1812 elections in the new state of Louisiana.

class="wikitable" style="text-align:center; width:800px;"

{{Party shading/Democratic-Republican}} | DR{{Sub|8}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|7}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|6}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|5}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|4}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|3}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|2}}

| {{Party shading/Democratic-Republican}} | DR{{Sub|1}}

width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|9}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|10}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|11}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|12}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|13}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|14}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|15}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|16}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|17}}

| width=50px {{Party shading/Democratic-Republican}} | DR{{Sub|18}}

colspan=9 style="text-align:right" | Majority →

| rowspan=2 {{Party shading/Democratic-Republican}} | DR{{Sub|19}}

{{Party shading/Democratic-Republican/active}} | DR{{Sub|28}}
{{Small|#Pennsylvania}}
{{Small|Retired}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|27}}
{{Small|Ohio}}
{{Small|Retired}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|26}}
{{Small|#North Carolina}}
{{Small|Retired}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|25}}
{{Small|#Kentucky}}
{{Small|Retired}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|24}}
{{Small|#Maryland}}
{{Small|Unknown}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|23}}
{{Small|#Louisiana}}
{{Small|Unknown}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|22}}
{{Small|#South Carolina}}
{{Small|Ran}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|21}}
{{Small|#New York}}
{{Small|Ran}}

| {{Party shading/Democratic-Republican/active}} | DR{{Sub|20}}
{{Small|#Georgia}}
{{Small|Ran}}

{{Party shading/Democratic-Republican/active}} | DR{{Sub|29}}
{{Small|#Vermont}}
{{Small|Retired}}

| {{Party shading/Federalist/active}} | F{{Sub|7}}
{{Small|#New Hampshire}}
{{Small|Ran}}

| {{Party shading/Federalist/active}} | F{{Sub|6}}
{{Small|#Connecticut}}
{{Small|Ran}}

| {{Party shading/Federalist}} | F{{Sub|5}}

| {{Party shading/Federalist}} | F{{Sub|4}}

| {{Party shading/Federalist}} | F{{Sub|3}}

| {{Party shading/Federalist}} | F{{Sub|2}}

| {{Party shading/Federalist}} | F{{Sub|1}}

= Result of the regular elections =