She was a member of the European Parliament from 1994 to 1999, where she was the chair of the Greens. Aelvoet was appointed deputy prime minister and the Minister of Consumer Affairs, Public Health and the Environment in the Verhofstadt I government between 1999 and 2002 and became a Minister of State in 1995.
Aelvoet was a member of the European Parliament from 1994 to 1999, where she held the position of chair of the Greens. She later served as deputy prime minister and Minister of Consumer Affairs, Public Health, and Environment in the Verhofstadt I government between 1999 and 2002.