Koch initially served as
chairwoman of the
Young Socialists in Dresden from 2016 to 2019, then as state chairwoman in Saxony until 2021. She has been deputy state chairwoman of the SPD Saxony since 2021. Koch ran in the 2019 state election in Saxony in the Dresden 6 constituency and was 15th on the SPD state list, but failed to win a seat in the
Saxon state parliament. In the 2024 state election, she ran in the Dresden 2 constituency and won a seat in the state parliament, coming third on the SPD state list. On 28 May 2025, Koch was appointed Federal Government Commissioner for the Acceptance of Sexual and Gender Diversity (Queer Commissioner). == References ==