Valentin was elected into the municipal council of
Gribskov Municipality at the
2005 Danish local elections and has sat in the municipal council since. He was elected into national parliament in the 2019 election, where 3,448 votes were cast for him. Although he was initially not re-elected at the
2022 Danish general election,
Karen Ellemann resigned shortly after her election and Valentin replaced her, thus keeping his seat in the Folketing. ==References==