In the 1918 election Oud stood for elections again, and was elected with 5,000 preference votes, mainly from the former district of Den Helder. While MP, Oud also served as secretary of the VDB national board and editor of the De Vrijzinnige Democraat, the party's magazine.
In 1918, Oud ran in elections again and was elected with 5,000 preference votes, mainly from Den Helder. As an MP, he also held positions as secretary for the VDB national board and editor of De Vrijzinnige Democraat, the party's publication.