He became a municipal councilor for the PVV in Zandvoort in 2015. Since 2018 he has also sat on the Provincial Council of North Holland where he acts as the party's group leader. He also sits on the council's committee for social mobility and finance. In the 2023 Dutch general election, Deen was elected to the House of Representatives.[2][3][4] He serves as his party's spokesperson for emancipation.[5]