Party
- National Republican Senatorial Committee (NRSC)
- Republican Governors Association (RGA)
- Republican National Committee (RNC)
- SC House Republican Caucus (SCHRC)
Campaign
- US Senator Lindsey Graham (SC)
- Governor Henry McMaster (SC)
- President Donald J. Trump (Trump 47 Committee)
- Governor Nikki Haley (SC)
- Governor Mark Sanford (SC)
- Governor David Beasley (SC)
- Governor George Voinovich (OH)
- US Senator Bill Frist (TN)
- US Senator Phil Gramm (TX) (US Senate and Presidential campaigns)
- US Senator David Perdue (GA)
- Speaker G. Murrell Smith, Jr. (SC)
- US Senator Marsha Blackburn (TN)
- House Majority Whip Tom Emmer (MN)
- State Senator Chip Campsen (SC)
- US Representative Sheri Biggs (SC)
Issue/Event
- South Carolina Inaugural Committee (2003, 2007, 2011, 2015, 2019, 2023)
- National Governors Association (NGA)
- National Speakers Conference
- Southern Legislative Conference
- POLARIS National Security
- Project Palmetto Shield, a statewide right to work initiative
- Future Makers of SC, a statewide education/workforce development initiative
- Charleston Regional Development Alliance (CRDA)