Liberal Party Bernardi entered politics in 2006 when he was selected by the
Liberal Party to fill a Senate seat vacancy for South Australia, left by the resignation of
Robert Hill. During his time in Parliament, Bernardi attracted controversy over several statements and views. On 17 February 2007, Bernardi was pre-selected ahead of
Simon Birmingham and Senator
Grant Chapman by the State Council of the
South Australian Liberal Party to the top position on the South Australian Liberal Senate ticket for the
federal election to be held in late 2007. At the election, Bernardi was elected to a full six-year term. He was again given the first place on the Liberal ticket at the
2013 federal election and was re-elected. Following a
double dissolution of Parliament at the
2016 federal election, Bernardi was re-elected from the second place on the Liberal ticket. He was elected for a term of six years, ending on 30 June 2022.
Opposition under Brendan Nelson: 2007–2008 In December 2007, Bernardi was appointed the federal
Coalition's Shadow Parliamentary Secretary for Families and Community Services. On 19 March 2008, Bernardi was named in a story published in
The Australian newspaper as having been linked to a scheme that sold financial advice on how divorcees could hide money from their former spouses. In a media statement released shortly after the article was published, Bernardi described the story as "a rehash of a factually incorrect story that first appeared in 2006 before my appointment to the Senate." Bernardi claimed that he had been "made aware that a colleague [had] been approaching numerous journalists in an attempt to 'push' this matter as a means of personally attacking me." In a statement, he went on to say, "I find it disappointing that there are people who clearly pine to background journalists with half-truths and mischievous suggestions in an attempt to smear others. The people who creep out of their darkened closets to resurrect previously discredited accusations do no service to themselves or the community. Politics is a battle of ideas, not a battle of smears." On 20 March 2008, Bernardi introduced a motion calling for a Senate inquiry into swearing on television and the effectiveness of the Code of Practice after a television show was broadcast at 8.30 pm containing the word "fuck" eighty times in 40 minutes. The Senate supported the motion. Then in June, Bernardi stated his personal view on onlineopinion.com.au regarding a proposed reform relating to
same-sex relationships. He stated, "Same-sex relationships are not the same as marital relationships and to treat them the same is to suspend common sense". A month later, Bernardi questioned the ethics of granting human rights to great apes while ignoring the rights of the unborn child on the ABC "Unleashed" website. In August 2008, the
Herald Sun newspaper reported that the Federal Parliamentary Library had, following a request from Bernardi, identified a loophole in government legislation that allowed some women who aborted their pregnancies to claim a $5,000 "
baby bonus". The Government later stated that the bonus was not available for aborted pregnancies and was committed to following up on any such occurrences.
Opposition under Malcolm Turnbull: 2008–2009 In September 2008, new federal Liberal leader
Malcolm Turnbull appointed Bernardi the Coalition Spokesman for Disabilities, Carers and the Voluntary Sector. In October, Bernardi caused a stir with a speech to the Senate against the
Same-Sex Relationships (Equal Treatment in Commonwealth Laws-Superannuation) Bill 2008 supported by the Liberal Party. The bill led to discontent within the party's conservative faction—of which Bernardi was a key figure. Turnbull was "unhappy that Party authority was being challenged" by Bernardi. In Bernardi's speech, he complained that society should not "throw open the doors and welcome into the fold those whose relationships are uncharacteristic of the most basic elements of a marital union." The next morning, Turnbull rang Bernardi to "chip him", having felt the speech was intemperate in tone and that it went against the party line and Turnbull's own leadership. Bernardi was removed from the Shadow Ministry by Turnbull in February 2009 after reportedly making unsubstantiated and damaging claims regarding an unidentified fellow Liberal MP in his weekly blog. The MP involved was thought to be
Christopher Pyne, who denied the allegations as "preposterous".
Opposition under Tony Abbott: 2009–2013 Following the election of
Tony Abbott as the leader of the federal Liberal Party in late 2009, Bernardi was appointed Shadow Parliamentary Secretary Assisting the Leader of the Opposition and Shadow Parliamentary Secretary for Infrastructure and Population Policy, and in August 2012 was appointed Deputy Manager of Opposition Business in the Senate. In September 2012, Bernardi resigned from his position as parliamentary secretary as a result of statements he had made the day before, when he argued that permitting same-sex marriages would lead to legalised
polygamy and bestiality.
Abbott and Turnbull governments: 2013–2017 In January 2014, Prime Minister Tony Abbott again distanced himself from Bernardi after the latter called for a new debate on abortion, called for more flexible industrial relations laws, stated his belief in the primacy of the traditional family and claimed that non-traditional families may cause negative social outcomes, linked a secular polity with Australia having lost its way, and claimed that Christianity was under siege from both the political
Greens and Islam. Bernardi was re-elected for a six-year term in the Senate at the
July 2016 election. In September 2016, Bernardi spoke in favour of the repeal of
section 18C of the
Racial Discrimination Act, which prohibits speech that is reasonably likely to "offend, insult, humiliate or intimidate on the basis of race, colour or national or ethnic origin". In December 2016, Bernardi had a public disagreement with former Prime Minister
Tony Abbott over reports that Bernardi may start his own party. In the same month, it was reported that Bernardi had in 2009 set up an entity called the Conservative Leadership Foundation, "a fundraising entity that inhabits a grey area in the political donations system and permits gifts from foreign donors." and that "it has never made a disclosure to the
Australian Electoral Commission as an associated entity, nor disclosed any political expenditure."
Australian Conservatives On 7 February 2017, seven months after the 2016 election, Bernardi left the Liberal Party to form a separate party, the
Australian Conservatives, which was born out of Bernardi's Australian Conservatives movement. The Australian Conservatives movement was formed by Bernardi in July 2016 to "unite conservatives", and by August claimed 50,000 members. In June 2019, Bernardi announced that he was disbanding the Australian Conservatives and the party was voluntarily deregistered by the
Australian Electoral Commission on 25 June 2019. He cited a poor result in the
2019 Australian federal election, and said that the removal of Turnbull as prime minister meant that his supporters would return to the Liberal Party. and on 20 January 2020, he resigned from the Senate with immediate effect. Because he was elected as a member of the Liberal Party, a member of that party would fill the
vacancy caused by his resignation. The former
President of the South Australian Legislative Council,
Andrew McLachlan, filled Bernardi's vacancy on 6 February 2020. After leaving the Senate, Bernardi became a commentator and podcaster with
Sky News Australia.
One Nation In February 2026, Bernardi joined
One Nation and announced that he would run for a
Legislative Council seat in the
2026 South Australian state election in the lead position. On 3 March 2026 he posted a video to social media expressing frustration over a sign at
Adelaide University reading "
Niina Marni", which means "hello, how are you?" in the language of the
Kaurna people, the original inhabitants and
traditional owners of Adelaide and the
Adelaide Plains. Bernardi said he did not know what the phrase meant, and suggested that few others did either, calling the sign "empty symbolism... trying to erase our history". He also reiterated his view that same-sex marriage leads to bestiality. At the
2026 state election, Bernardi was elected to the Legislative Council, and will serve an eight-year term. One of his stated policies is to abolish the
South Australian Voice to Parliament, which was established in 2023. ==Political views ==