Leadership election In May 2020, Muller challenged National Party leader
Simon Bridges for the leadership on a joint ticket with
Auckland Central MP
Nikki Kaye. The reasons cited were poll results in a
Newshub Reid Research Poll. The day prior to the challenge, he had publicly denied having leadership ambitions and supported Bridges despite a media endorsement from Jim Bolger. A One News Colmar Brunton poll released the evening before the coup had Muller with the support of 0.2% of voters as preferred prime minister compared to
Jacinda Ardern on 63% and Bridges on 5%. Muller won the resulting vote on 22 May 2020 with more than 29 votes cast for him. The party's caucus was said to be evenly divided over whether the leadership change was the correct course of action. Along with Kaye, MPs in National's group of liberal MPs such as Chris Bishop, Amy Adams, and Nicola Willis were among those supporting Muller's run. Senior MP
Anne Tolley, a conservative, was among those who spoke out in opposition to Muller's leadership challenge, calling it "nutty stuff", announcing that she would be retiring shortly thereafter. Another National MP, speaking to media on the condition of anonymity, described Muller in contrast to Bridges as a "pale, stale male".
Judith Collins, a Bridges rival, and senior MP
Gerry Brownlee joined Muller at his first press conference.
Leader of the Opposition Muller announced his shadow cabinet on 25 May, with senior caucus member Amy Adams announcing she was reversing her previous decision to retire. Other senior positions were given to Muller allies Chris Bishop and Nicola Willis. Bridges ally Paul Goldsmith was retained as finance spokesperson. Muller stated former leader Simon Bridges was offered a shadow ministerial role but declined, saying he was taking time to consider his future. Bridges quickly stated he was taking "time out" and would stand and help win the next election. National MP
Jo Hayes criticised Muller for the lack of ethnic diversity present in the new frontbench, telling media: "This is not good. We need to remedy this or you [the party leadership] need to front it and take it head-on and say why. You need to give a better explanation." On the same day,
Newshub reported that several National MPs were already leaking to media against Muller and his deputy Nikki Kaye, four days after the leadership change had occurred. On 27 May, another leak against the leadership was made to
Newshub claiming the campaign chair,
Gerry Brownlee, had set up an "intelligence unit" to find negative information on political opponents. Brownlee said the leaks were "disappointing," untrue, and had come from "bitter backers" of former leader Simon Bridges. As a result of the leaks to media, inability to fend off criticism over his "
Make America Great Again" cap display (see below), and allegedly poor television interview performances, Muller was criticised by commentators traditionally supportive of the National Party, including
Mark Richardson. Fellow conservative commentator
Mike Hosking opined in his
New Zealand Herald column that "Todd Muller's first full day out including Parliament was little short of a disaster."
New Zealand First, who had been relentless critics of Bridges and who Bridges had ruled out as coalition partners in any future government, warmed to the new leader. MP
Shane Jones said that "... I do sense coming from [him], good vibrations in contrast to Paula and Simon." Muller indicated he would be willing to work with New Zealand First to form a new government after the 2020 election. He had previously known New Zealand First leader
Winston Peters when Peters had been the National Party MP in
Tauranga and Muller had led the
Young Nationals at
Waikato University. Muller also distanced himself from some previous iterations of the National Party by describing the
Treaty of Waitangi as the nation's "founding document." On 7 and 8 July, Muller moved to sack
Hamish Walker after the first-term MP admitted to leaking personal details of
COVID-19 patients to the media. The weekend after, Muller refused to appear on
Q+A to discuss the incident and directed his inner circle to focus on National's energy policy to be announced the next week. That energy policy was never announced. To the surprise of most commentators, Muller resigned from the leadership before 8:00 a.m. on 14 July 2020, stating, "I am not the best person to be Leader of the Opposition and Leader of the New Zealand National Party at this critical time for New Zealand" and that the role had had a negative impact on his mental health. After being replaced as leader by
Judith Collins, and taking sick leave for nearly four weeks, Muller stated in interviews, "I had anxiety. I had experienced that quite severely and I had panic attacks" He also ruled out another bid for the party leadership. == Post-leadership ==