Sanford is the third Republican to announce a primary challenge to Trump, joining former Rep. Joe Walsh, R-Ill., and former Massachusetts Gov. Bill Weld.
HuffPost is now part of the Verizon Media family. We (Verizon Media) and our partners need your consent to access your device, set cookies, and use your data, including your location, to understand your interests, provide relevant ads and measure their effectiveness. Verizon Media will also provide relevant ads to you on our partners’ products. […]