[2] Kimpson won a special election to succeed Robert Ford in 2013[3][4] representing the 42nd district in the South Carolina Senate.
[6] Kimpson was selected as one of seventeen speakers to jointly deliver the keynote address at the 2020 Democratic National Convention.
[7] On March 10, 2023, President Biden published his intent to appoint Kimpson and thirteen others to the Advisory Committee for Trade Policy and Negotiations, a committee established by the Office of the US Trade Representative, part of the Executive Office of the President.
[8] Kimpson announced that he would vacate his South Carolina Senate seat later in 2023 to take up the appointment.
[9][10] Kimpson attended the 2024 Democratic National Convention as a Sixth Congressional District delegate.