If Harrison wins, SC will have two black senators.
Historical.
But probably for 2 years---Tim Scott may retire in 2022
Harrison will be vulnerable in 2026---Jeff Duncan or Alan Wilson can defeat him.
What makes you say that? Why would he retire during a Biden mid-term? He is more likely to retire by 2028.
From what I have read, Sen. Tim Scott has indicated that he will run for what will be his final Senate term in 2022:
Whether Scott could even be persuaded to mount a presidential bid remains unclear. The senator’s distaste for national politics is well-known, and he has said his 2022 Senate reelection campaign will be his last.