In June 2020, Thorpe was
preselected by
Victorian Greens members to fill the federal
Senate vacancy created by former leader
Richard Di Natale's resignation. She was appointed to the vacancy at a joint sitting of the
Victorian Parliament on 4 September and sworn in on 6 October 2020. She is the first Aboriginal woman to represent Victoria in the Senate and the first Aboriginal federal parliamentarian from the Greens. Following the
May 2022 federal election, at which she was re-elected, Thorpe was
elected by the Greens party as its deputy leader in the Senate. commented that Thorpe is not qualified to speak on Northern Territory issues. During a debate later in the evening, Thorpe commented to
Hollie Hughes that "at least I keep my legs shut". When challenged, Thorpe retracted her comment and apologised to Hughes. She said the comment was not a reference to Hughes's family. In a June 2022 interview, Thorpe said that the parliament has "no permission to be here [in Australia]" and that she’s a parliament member "only" so she can "infiltrate" the "colonial project." She added that the
Australian flag had "no permission to be" in the land. Aboriginal, conservative senator
Jacinta Nampijinpa Price denounced Thorpe's comments as "divisive" and "childish," and called for her dismissal from the parliament. In August 2022, during her swearing-in ceremony, Thorpe added the words "the colonising" in the required
Oath of Allegiance to
Queen Elizabeth II, saying: I Lidia Thorpe do solemnly and sincerely affirm and declare that I will be faithful and bear true allegiance to
the colonising Her Majesty Elizabeth the Second, Queen of Australia, Her heirs and successors according to law. Thorpe was immediately criticised by fellow senators. After an instruction by Labor the
President of the Australian Senate Sue Lines and interjections from others that the oath must be taken word-by-word, Thorpe recited the pledge once more, this time omitting the two words. On 16 April 2023, footage emerged of Thorpe in a verbal altercation with men outside a Melbourne
strip club. Thorpe was filmed telling a number of people they had a "small penis" and were "marked". She stated the men provoked the altercation by harassing her. The manager of the club said she provoked the incident by approaching white patrons, telling them they had "stolen her land;" he announced he was banning Thorpe from the club "for life." During a 2023 parliamentary hearing, while questioning the allocation of funding to Northern Territory police forces, Thorpe walked out of a Senate Estimates hearing after being called a "disgrace to her people" by Labor's assistant minister for Indigenous Australians
Malarndirri McCarthy, Aboriginal senator for the Northern Territory. On 14 June 2023, during the Senate's examination of the
2021 allegations of sexual misconduct in the institution, Thorpe accused Senator
David Van of
sexually assaulting her in the premises. Van denied the allegation as "disgusting," "unfounded and completely untrue," though he admitted that in 2021 he had moved his office after Thorpe had submitted complaints about "his conduct in parliament". Van was expelled from the Liberal Party. When asked about her relations with Senate colleagues, Thorpe stated she gets along well with
Malcolm Roberts of
One Nation and
Matt Canavan of the
National Party, despite Roberts and Canavan coming from the opposite end of the ideological spectrum.
Relationship with bikie gang ex-president While holding the justice portfolio for the Greens party and serving on the joint parliamentary law-enforcement committee, Thorpe was in a relationship with Dean Martin, ex-president of the
Rebels outlaw bikie gang. She had not disclosed the relationship to Greens leader
Adam Bandt, who became aware of the relationship after the
ABC published a report. Thorpe resigned her portfolio at Bandt's request. On 20 October 2021, it was reported that, following a complaint from one of her staff, the Department of Finance was reviewing the "culture" of Thorpe's office.
"Colonial system is burning" tweet Following an arson attack on
Old Parliament House, Canberra in December 2021, the Greens Senator shared a video of the fire taking hold at the entrance to the building, with the words: "Seems like the colonial system is burning down. Happy New Year everyone." The tweet was widely criticised. Labor MP
Mark Butler said "it is beyond me how a member of the Australian parliament — who receives a salary from taxpayers — can applaud an outrageous act of vandalism on the centrepiece of Australian democracy."
Resignation from the Greens' deputy leadership On 20 October 2022,
ABC News revealed that Thorpe had been dating Martin in 2021. Thorpe resigned from her position as Greens' deputy leader in the Senate, shortly after. Following the revelation, Thorpe faced a
censure motion in the Senate.
ALP senator
Helen Polley, the head of the joint parliamentary law enforcement committee, of which Thorpe had been a member, said, with regard to Thorpe's position as a senator: "She should consider if it's the right place for her". Thorpe stated she continues to be friends with Martin. In March 2023, a parliamentary investigation cleared Thorpe of
contempt of parliament. The committee found that Thorpe did not disclose any sensitive information to Martin, but stated she should have declared their relationship to avoid the perception of a
conflict of interest.
Resignation from the Greens On 6 February 2023, Thorpe announced that she would resign from the Greens to become an independent senator, sitting on the cross-bench, over disagreements concerning the proposed Indigenous Voice to Parliament. In a statement, Thorpe stated that "This country has a strong grassroots
Blak Sovereign Movement, full of staunch and committed warriors and I want to represent that movement fully in this Parliament. It has become clear to me that I can't do that from within the Greens."
Progressive No in the 2023 Referendum In 2023, Australians were invited to vote Yes or No in a
referendum, titled the Indigenous Voice to Parliament, the first referendum in the country since 1999, which Prime Minister
Anthony Albanese described, when introducing it, as a "gracious request" that would give Indigenous people much needed input in policies that impact their lives. She became a "key figure" in the so-called Progressive No campaign, acknowledging that the proposal has deeply divided the Indigenous community. The referendum was held on 14 October 2023 and, with a turnout of 89.95%, the proposal was rejected by 60.06% of the voters.
Allegation against MP In an estimates hearing held in June 2024, which examined
COVID-19 stimulus funding, Thorpe asked land-council executives whether a grant equal to some $400,000 had been diverted by the
Northern Land Council, which represents Aboriginals, towards building at the Twin Hill Station cattle business company a "holiday house" for
Marion Scrymgour,
indigenous politician and
Lingiari federal MP. Thorpe's questioning during the hearing falls under
parliamentary privilege, but since the senator repeated the accusation on
social media, Scrymgour stated that a concerns notice would be issued to Thorpe since she intends to pursue legal action against the Victorian senator for
defamation.
Heckle of King Charles III On 21 October 2024, Thorpe
heckled
King Charles III by shouting "This is not your land, you are not my King" and "We want a treaty in this country. You are a
genocidalist", after he finished an address at Australia's
Parliament House as part of a royal visit to Australia. As she was escorted away by security, she was heard yelling "Fuck the Colony".
Ngunnawal elder Aunty Violet Sheridan, who had been with the royals at an official greeting party the same day and was sitting in the Parliament House during Thorpe's protest, stated the heckling was "disrespectful" and that Lidia Thorpe does not speak for her. The heckle was also condemned by prime minister
Anthony Albanese who commented that the heckling was not of the standard Australians rightly expect of parliamentarians, as well as
Peter Dutton,
Leader of the Opposition, who called on Thorpe to resign from the Senate. In the aftermath of the incident, she was asked about the oath she had recited and signed during her swearing-in process, in which she had sworn allegiance to
Queen Elizabeth II and "her
heirs". Thorpe stated she had instead said "her
hairs". Constitutional law expert
Anne Twomey stated in response that the signed oath would have stated "heirs", and that the presiding officer could exclude Senator Thorpe if they believed a valid oath had not been sworn.
Simon Birmingham,
leader of the opposition in the Senate, announced that the
coalition is considering "legal opinions" on the validity of the senator's constitutional duty of affirmation. Thorpe, subsequently, revised her comment, stating that, when she was being sworn in as a senator, she "mispronounced"
heirs as
hairs, "without meaning to do so", and did not do it deliberately. In an interview, she added that "they can't get rid of me," pointing out she's "got another three and a half years [of service in the Senate]." On 18 November 2024, Thorpe was
censured by the Australian Senate. The Senate's censure, which passed 46–12, described Thorpe's actions as "disrespectful and disruptive" and said they should disqualify her from representing the chamber as a member of any delegation. A censure motion is politically symbolic but carries no constitutional or legal weight.
Suspension from Senate On 27 November 2024, Thorpe was suspended from the Senate for the remainder of that sitting year for "disorderly conduct" following a confrontation with One Nation's
Pauline Hanson after Hanson questioned the eligibility of
Fatima Payman to sit in parliament under
foreign citizenship requirements. Thorpe is said to have shouted that Hanson was "a convicted racist" and thrown torn-up paper in Hanson's direction before walking out with her
middle finger raised. The morning after her suspension, Thorpe entered the Senate through the press gallery and yelled "Free Palestine" with her fist raised before departing of her own accord. Thorpe also attended a rally outside the building during which she described the "disciplinary colonial actions" levelled against her as a "badge of honour" and stated that she felt the Senate was a "very violent workplace" consisting of "mainly white men in suits, who look down on people like me."
Burn down parliament comment At a pro-
Palestine rally in Melbourne in October 2025, Thorpe compared the suffering of the Palestinians during the
Gaza genocide to that of indigenous Australians and said "if I have to, burn down Parliament House to make a point". She received vehement criticism from politicians for the remark. The
Australian Federal Police (AFP) are investigating the comments . Thorpe later said that her comments were "obviously not a literal threat. This mock outrage is ridiculous. While people are dying and starving in Gaza, politicians and media are once again clutching their pearls and chasing a scandal". The Senator had previously courted controversy tweeting "the colonial system is burning down. Happy New Year everyone," following a 2021 arson attack on
Old Parliament House. ==Assault==