In forming his cabinet, Vivian dropped his former finance minister Toke Talagi (one of the MPs to win his seat by draw).
Following the 2008 general election, he is a Member of the Niue Assembly, representing the constituency of Liku, and a member of Premier Toke Talagi's Cabinet, as Minister of Post and Telecommunications, Minister of Agriculture, Forestry and Fisheries, and Minister of Administrative Services.