She is a Democratic member of the Virginia House of Delegates, following a January 2023 special election to fill Virginia's 35th House of Delegates district, which became vacant following the resignation of Democrat Mark Keam.
On September 6, 2022, Democrat Mark Keam, who represented the 35th district in the Virginia House of Delegates, resigned to take a position in the Biden administration.
Keam's resignation lead to a special election for the seat.
[1] Seibold ran for the seat and defeated Karl V. Frisch in the Democratic party's nomination caucus, which was held on November 8, 2022.
[2] She won the general election, held on January 10, 2023, defeating Republican candidate Monique Baroudi.