 In 2014, she ran successfully to become a member of the Orange County Board of Supervisors representing the 2nd district, easily defeating state Assemblyman Allan Mansoor.She served as Vice Chair of the board in 2016 and was unanimously elected to serve as the Chairwoman for 2017.In 2018, Steel easily won re-election with 63% of the vote, eliminating the need for a runoff round.