(CNN) – South Carolina Gov. Nikki Haley called former state Attorney General Henry McMaster at 10 p.m. Sunday night to tell him he will not be the pick to replace outgoing Sen. Jim DeMint, a Republican source told CNN Monday.
McMaster was one of five Republicans on Haley's short list of potential Senate appointees.
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The other short-listers are Rep. Tim Scott, Rep. Trey Gowdy, former South Carolina First Lady Jenny Sanford and Department of Health and Environmental Control commissioner Catherine Templeton.
Haley will announce the pick at noon Monday.