Speaking on a podcast in 2021, Cates said of that time: "I got a sense of what you could achieve if you’re passionate about your community”. Cates was elected in 2015 as a parish councillor for Oughtibridge Ward on Bradfield Parish Council, which, at one point involved her campaigning to save local parkland. She was re-elected in 2019 and resigned her seat in 2021. Cates stood as a Conservative candidate for Stannington ward in the 2018 Sheffield City Council election and joined the party in the same year. She received 898 votes and finished third behind the Liberal Democrats candidates.