Townsend was elected to the New Mexico House of Representatives in 2016 and became Minority Leader at the start of the 2019 legislative session.
An opponent of abortion, Townsend voted against House Bill 51, which attempted to repeal an old New Mexico law that makes it a crime to perform an abortion.
[3][4] In 2022, Townsend obstructed the New Mexico legislature from passing voting reform legislation.
The legislation would have allowed people to sign up once to receive absentee ballots in future elections; restored the voting rights of felons; and required every county to provide a minimum of two ballot drop boxes.
Following the resignation of his successor T. Ryan Lane in March 2024 Townsend assumed the position of acting minority leader.