Sen. Darline Graham and Rep. Ralph Norman are wrapping up their campaigns for South Carolina's Republican nomination in a special U.S. Senate primary.

The final day of South Carolina’s Republican U.S. Senate runoff campaign on Monday came with a major cash infusion for Sen. Darline Graham from MAGA Inc., the super PAC that supports President Donald Trump and aligned Republicans but has spent little thus far on the president’s midterm candidate picks.

The spend of nearly $830,000 came as Graham and Rep. Ralph Norman wrapped up their compressed campaigns to win South Carolina’s GOP nomination in a special primary to replace the late Sen. Lindsey Graham on November ballots.

Tuesday’s Senate runoff tests the heft of both a famous political last name and the endorsement of Trump, who is backing Darline Graham and campaigned in the state for her days ahead of the vote.