was elected prime minister in 2014, becoming the first commoner elected to the role During the previous election, held in 2014, the PTOA, led by ‘Akilisi Pōhiva, won nine seats, while independents secured eight. Around half of the incumbent people's representatives lost their seats, as did one noble. Despite the election seeing a record 16 female candidates contest, no women were elected. Following the election, two MPs announced their candidacies for the parliamentary vote for prime minister, Pōhiva and Deputy Prime Minister
Samiu Vaipulu. In the lead-up to the vote, Vaipulu emerged as the apparent favourite. Shortly before voting commenced on 29 December, a group of independents, led by
Siaosi Sovaleni, switched their support to Pōhiva, who went on to defeat Vaipulu. The outgoing prime minister, Sialeʻataongo Tuʻivakanō, was subsequently elected as the speaker of parliament. Pōhiva retained two incumbent ministers, one of whom,
Maʻafu Tukuiʻaulahi, was also the sole noble member. The motion garnered the support of 10 MPs, which included most of the nobles and some independents, while 14 MPs voted to keep Pōhiva in office. Finance Minister ‘Aisake Eke abstained and was reportedly forced to resign from cabinet shortly after. On 24 August 2017, acting on the advice of Speaker Tuʻivakanō, King Tupou VI suddenly dissolved parliament, bringing forward elections that were originally planned for 2018. Tuʻivakanō accused Pōhiva of seeking to remove certain powers from the monarch and privy council, including the authority to appoint the attorney-general and police commissioner. The speaker also claimed that the PTOA had attempted to ratify the
Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW) while evading the monarch's approval. CEDAW was initially supported by the government, but became controversial in Tonga due to allegations that it would pave the way for the legalisation of
same-sex marriage and that it was anti-Christian. Following protests and public outcry, the government withdrew its support for CEDAW. The dissolution occurred amidst a strained relationship between the monarch and Pōhiva. The prime minister characterised the situation as a "failed coup", stating that his opponents were unable to oust his administration completely, as it remained in government in a caretaker capacity. While several legal and political commentators believed the dissolution lacked legal legitimacy due its justifications, Pōhiva ultimately declined to bring the matter before the courts. Shortly after parliament was dissolved, Pōhiva dismissed Sovaleni as deputy prime minister, who was succeeded by Tukuiʻaulahi. ==Electoral system==