Following her husband's election as Prime Minister in the 2010 election Puna managed their pearl farm on Manihiki.[6] When he retired in 2021 in order to take up the job of Secretary General of the Pacific Islands Forum[7] she stood in his former seat of Manihiki in the resulting by-election,[8] and was elected.[9] She was sworn in as an MP on 31 May 2021.[10]