A Democrat, Clark has represented the 136th district of the New York State Assembly, based in outer Rochester and the nearby suburbs of Irondequoit and Brighton, since November 2020.

[1][3] In 2020, after incumbent Jamie Romeo was appointed as Monroe County Clerk, Clark announced she would run for the 136th district of the New York State Assembly.

With the backing of Hillary Clinton, Kirsten Gillibrand, and the Working Families Party, Clark handily won the Democratic primary 63-28% over county legislator Justin Wilcox.

[4] Clark faced no major-party opposition in the general election, and was seated in the Assembly on November 12.

[5][6] In 2022, Clark was re-elected to a second term after defeating Republican candidate, Orlando Rivera, with 64% of the vote.