"On all the most important issues facing our state and country, from dealing with our dangerous levels of debt, to repealing or resisting the government health care takeover, to standing up for Charleston jobs against the NLRB, 1st District voters have a stark choice," Scott said in a statement to Charleston'sThe Post & Courier.
"Mark Sanford is hands down better on all of those issues, and that's why I believe he merits support."
South Carolina Gov. Nikki Haley (R) is scheduled to host a fundraiser for Sanford Wednesday evening. Sen. Lindsey GrahamLindsey GrahamTrump on primary rivals who don't back him: 'I don't know how they live with themselves' The Trail 2016: Who is really winning? Graham: GOP Senate could rein in Clinton White House MORE (R-S.C.), who endorsed Sanford after he won his House primary earlier this month, sent tweets encouraging voters to support his old friend Wednesday morning.
Other Republicans have been less eager to get behind Sanford, however. Many lawmakers in the South Carolina House delegation haven't endorsed Sanford, and the National Republican Congressional Committee has refused to back him following recent trespassing allegations by his ex-wife.
Sanford and Colbert Busch are locked in a tight race despite the district leaning heavily Republican. That's largely due to his personal baggage: Many voters best remember Sanford for disappearing from the state to visit his Argentinian mistress after telling his staff he was hiking the Appalachian Trail.