Answer
Støre's political mentor was Gro Harlem Brundtland, Norway's first female Prime Minister and a prominent figure in the Labour Party. Brundtland served as Prime Minister in three different periods, from 1981 to 1986, 1986 to 1989, and 1990 to 1996, leaving a lasting impact on Norwegian politics. She was known for her strong leadership, her commitment to environmental sustainability, and her progressive social policies.