Born in Lørenskog, from 1995 Eriksen Søreide studied law at the University of Tromsø, while at university she joined the Conservative Party and got involved in local politics. In 2000 she became a member of the Conservative Party Central Executive Committee and Chairman of the Young Conservatives of Norway.
Eriksen Søreide started work as a producer at Metropol TV, she was also elected a Deputy Member of the Storting for Oslo. Following Metropol's closure Eriksen Søreide joined Grette law firm as a trainee, In 2005 she was elected a Member of the Storting for the first time.
2005 - 2009: Chairman of the Standing Committee on Education, Research and Church Affairs.
2001 - 2005: Member of the Standing Committee on Education, Research and Church Affairs