Lagas joined the Farmer–Citizen Movement in 2021 after leaving the People's Party for Freedom and Democracy (VVD), for which she previously served as a municipal councillor and alderwoman.
[1] After working in a hospital laboratory for eleven years, she became a teacher in German and civics at a college for vocational education (MBO) in 1985.
[3] In 2011, Lagas survived a motion of no confidence after a municipal construction project had resulted in a loss of €28.5 million.
[2] The fourth Rutte cabinet's policy to reduce agricultural nitrogen pollution by 50% before 2030 contributed to her decision to leave the party.
[2] Her daughter, Marijke Lagas, is a cystic fibrosis patient, who successfully advocated for health insurance coverage of treatment with lumacaftor/ivacaftor in the Netherlands.