2018Flipped from RepublicanFinal results
2018 election for South Carolina's 1st District
U.S. House · South Carolina
Joe Cunningham (D) won with 50.6% of the vote, defeating Katie Arrington (R) by 1.4 points, a seat Republicans won last time.
Joe CunninghamDemocrat · winner
50.6%145,455
Katie ArringtonRepublican
49.2%141,473
287,433 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Joe CunninghamKatie Arrington
$2.5M
Raised by the campaign
$1.7M
$2.4M
Spent by the campaign
$1.7M
$58.6K
Cash on hand
$964
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018