He resigned on March 28, 2023 to run for election to a different seat in the chamber.[4] On June 20, 2023 Clark won the Democratic primary for the new 84th district.[5] He won the election with 53% of the vote to his Republican opponent's 47% Michael Dillender in Virginia's 84th House of Delegates district.
He worked as a campaign organizer for Tim Kaine from when he was governor. Clark became the youngest ever representative at 26 years old, the minimum age to be a representative is 21 years old.[6]
At the start of the 2024-2025 session, Clark introduced a bill that would prohibit the collection of medical debt if collection proceedings didn't start within 3 years of the due date on the final notice.[7]
In February of 2024, Clark introduced a bill to cap rising rents which ultimately didn't advance.[8]