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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2018/US House/South Carolina/SC-03
      2018·US House·South Carolina·District profile →

      South Carolina District 3 US House

      Winner
      REP
      Jeff Duncan
      67.8%153,338 votes
      Runner-up
      DEM
      Mary Geren
      31.0%70,046 votes
      Margin
      R+36.8
      226,204 total votes
      4 candidates226,204 total votes
      CandidatePartyVotes ▼%Vote Share
      Jeff DuncanREP✓
      		REP153,33867.8%
      Mary GerenDEM
      		DEM70,04631.0%
      Dave MooreOTH
      		OTH2,6971.2%
      WriteinOTH
      		OTH1230.1%

      Presidential Vote by District

      5 elections · 2008–2024 · 118th Congress boundaries
      Latest (2024)R+43.1
      Shift vs 2020↓ R+5.6
      R+40R+20EvenD+20D+4020082012201620202024
      YearDem %Rep %MarginTurnout
      202427.8%70.9%R+43.1356,366
      202030.6%68.0%R+37.5348,346
      201629.1%66.9%R+37.8296,737
      201234.5%65.5%R+31.0270,984
      200832.5%65.6%R+33.1269,956

      Seat History

      US House in South Carolina

      2024
      Sheri BiggsREP
      R+46.4
      2022
      Jeff DuncanREP
      R+97.6
      Redistricted
      2020
      Jeff DuncanREP
      R+42.5
      2016
      Jeff DuncanREP
      R+45.8
      2014
      Jeff DuncanREP
      R+42.4
      2012
      Jeff DuncanREP
      R+33.3
      Redistricted
      2010
      Jeff DuncanREP
      R+29.6
      2008
      J Gresham BarrettREP
      R+29.5
      2006
      J Gresham BarrettREP
      R+25.8
      2004
      J Gresham BarrettREP
      R+99.5
      2002
      J Gresham BarrettREP
      R+35.9
      Redistricted
      2000
      Lindsey O GrahamREP
      R+38.5
      1998
      Lindsey O GrahamREP
      R+99.7
      1996
      Lindsey O GrahamREP
      R+21.6
      View all US House history for South Carolina →

      Candidates

      WriteinOTH
      Record0W-2660L
      Avg Margin---
      Career1976-2024
      US House / Governor
      Full profile →
      Jeff DuncanREP
      Record11W-0L
      Avg MarginR+62.0
      Career2002-2022
      US House / State House
      Full profile →
      Dave MooreOTH
      Record0W-1L
      Avg Margin---
      Career2018-2018
      US House
      Full profile →
      Mary GerenDEM
      Record0W-2L
      Avg MarginR+35.9
      Career2016-2018
      US House / State House
      Full profile →

      Also in South Carolina, 2018

      Governor1 contest →
      ← All 2018 US House races2018 overviewSouth Carolina profileAll elections