By Trendsetter Tribune 
On Monday, March 30, 2026, former Governor and Congressman Mark Sanford officially filed to run for South Carolina’s 1st Congressional District. Sanford submitted his paperwork just hours before the state’s filing deadline, seeking to reclaim the Lowcountry seat he has already held twice before.
The seat is open this cycle because incumbent Representative Nancy Mace—who flipped the district back to Republican hands in 2020—is vacating it to run for Governor of South Carolina.
A Platform Focused on “Financial Sanity”
Sanford, now 65, is anchoring his comeback bid on his long-standing reputation as a fiscal hawk. In his announcement, he identified the national debt as the “defining issue of our time.”
- The Core Message: Sanford is campaigning on a promise to rein in federal spending, restore constitutional limits on government, and defend individual liberties.
- The “Appalachian Trail” Legacy: While his political career was famously derailed by a 2009 scandal during his governorship, Sanford has proven his ability to win in the 1st District post-scandal, having won a special election there in 2013.
- War Chest: Sanford enters the race with a significant financial advantage, reportedly holding over $1.3 million in a federal campaign account that has remained largely untouched since his 2018 primary loss.
The Road Through the GOP Primary
Sanford faces a steep climb in what has become a highly competitive Republican primary. He is one of at least 11 Republicans vying for the nomination.
| Key Primary Challengers | Background |
| Mark Smith | Current State Representative from the 99th District. |
| Local Officials | Several county-level lawmakers have also filed for the seat. |
| The “Trump Factor” | Sanford has been a vocal critic of the President, a stance that contributed to his 2018 primary defeat. Analysts are watching to see if the President will once again intervene in the district to back an opponent. |
Election Timeline and District Outlook
The primary is scheduled for Tuesday, June 9, 2026. If no candidate receives more than 50% of the vote, a runoff will be held two weeks later.
- General Election Profile: While the 1st District was once a swing seat (held by Democrat Joe Cunningham from 2018–2020), recent redistricting has made it more favorable for Republicans. The Cook Political Report currently rates the open seat as “Solid Republican.”
- Democratic Contenders: At least seven Democrats have filed for the seat, including Mac Deford, who narrowly lost the 2024 primary, and former county chairwoman Mayra Rivera-Vasquez.
Why Now?
The timing of Sanford’s return is notable, as he has spent several years “on the bleachers” after a short-lived 2020 presidential challenge. Supporters believe his focus on the national debt may resonate more strongly in 2026 given the current economic climate and the ongoing federal budget disputes that have led to recent government shutdowns.