President Donald Trump posted on Twitter he was thinking about Arrington. U.S. Rep. Mark Sanford also sent prayers to Arrington over Twitter. Arrington defeated Sanford in the June 12 primary thanks to strong support from Trump.
Authorities say Arrington was the passenger in a car that was hit head on Friday night by another vehicle on U.S. Highway 17 near Charleston.
Arrington's campaign says she suffered a broken back and ribs and will be hospitalized for two weeks.
Authorities say the driver of her car, 59-year-old Jacqueline Goff of Mandeville, Louisiana, also suffered serious injuries.
The driver of the other car was killed and has not been publicly identified.
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