Jeff Duncan — Former U.S. Representative (SC-3)
Category: Federal Legislator — U.S. Representative (former) Role: Served 2011–2023; Retired from Congress in January 2023; ran unsuccessfully for SC governorship Priority: P3
Basis for Inclusion
Subject Classification: Former Public Official — Retired from Congress in January 2023; ran unsuccessfully for SC governorship Basis for Inclusion: (1) Signed the Texas v. Pennsylvania amicus brief; (2) voted to reject certified Electoral College results from Arizona and Pennsylvania on January 6-7, 2021. What Is Not the Basis for Inclusion: Policy positions or party affiliation.
Who Is Jeff Duncan?
Jeffrey Douglas Duncan (born January 7, 1966, Greenville, South Carolina) is a Republican former U.S. Representative who served South Carolina’s 3rd Congressional District from 2011 to 2023. He retired from Congress and ran unsuccessfully for the Republican nomination for South Carolina governor in the 2022 cycle.
Documented Actions: 2020 Election
December 11, 2020: Signed Texas v. Pennsylvania Amicus Brief
SourceTexas v. Pennsylvania, No. 22O155, amicus brief of 126 Representatives.Jeff Duncan signed the amicus brief in Texas v. Pennsylvania, No. 22O155.
January 6–7, 2021: Voted to Reject Certified Electoral College Results
SourceGovTrack.us; Ballotpedia.Jeff Duncan voted YEA on the House objections to Arizona and Pennsylvania’s certified electoral results.
Accountability Status
Current status: Retired from Congress in January 2023; ran unsuccessfully for SC governorship Legal exposure: No known criminal charges or investigations
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Investigative trail pointers (public records)
Education only — verify independently. Absence of hits is not proof.
| Channel | Starting points |
|---|---|
| Federal courts | CourtListener / PACER party and attorney searches (spelling variants) |
| Campaign finance | FEC + OpenSecrets for committees and donors tied to documented roles |
| Corporate / LLC | State secretary of state; OpenCorporates for cross-border shells from reporting |
| Sanctions / PEP | OpenSanctions when international business context is already sourced |
| Contracts / grants | USAspending.gov for named entities from investigations |
Use public-records-research-specialist, corporate-intelligence-investigator, and public-corruption-ombudsman evidence tiers.
Sources
- Wikipedia, “Jeff Duncan”
- GovTrack.us
- Texas v. Pennsylvania, No. 22O155, amicus brief
Last Updated: May 22, 2026 Profile Status: Former member — Retired from Congress in January 2023; ran unsuccessfully for SC governorship