Liu was raised in Pointe-Claire, Quebec. Prior to attending McGill, she was a student at Royal West Academy and Collège Jean-de-Brébeuf. At Jean-de-Brébeuf, she became politically active by founding the NDP campus club. She later moved on to be co-president of the youth wing of the Quebec section of the NDP. She was active on campus as a board member of CKUT radio, a representative to the CKUT Programming Committee, an employee of McGill University's undergraduate student union, and a staff member of the McGill Daily. Liu, whose parents came to Canada from Guangzhou in the 1980s, is fluent in French, English, and Cantonese.
MP for Rivière-des-Mille-Îles
Liu had not expected to win, and spent most of the campaign helping NDP Quebec lieutenant Thomas Mulcair win reelection. She was working in a polling station in Mulcair's Outremont riding as an NDP scrutineer when a friend texted her that she was leading Bloc Québécois incumbent Luc Desnoyers. Ultimately, she defeated Desnoyers by a staggering 11,000-vote margin. By comparison, no NDP candidate had finished higher than fourth since the riding's creation in 1997, and all previous NDP challengers had failed to garner the 10% necessary for their expenses to be refunded. At the age of 20 years, 196 days, Liu became the youngest woman in Canadian history to be elected to Parliament. She was the second-youngest MP in the 41st parliament, after Pierre-Luc Dusseault.
In Parliament
Liu was named deputy critic for the environment. In this capacity, she represented the NDP at the December 2011 conference on climate change in Durban, South Africa, where she denounced the Conservatives' environmental policies. In the 2012 NDP leadership race following the death of Jack Layton, Liu supported Peggy Nash. Following the accession of Thomas Mulcair as party leader, Liu was named deputy critic for science and technology. She has spoken out numerous times in the House of Commons against the muzzling of federal scientists by the conservative government. On June 10, 2012, Liu attended the "Death of evidence" march on Parliament Hill which was led by groups of scientists following the elimination of the long-form census, the closure of the world-renowned Experimental Lakes Area as well as other cuts to environmental and scientific agencies contained in the Conservative Omnibus Bill C-38. In 2015, she was also named deputy critic for industry. She advocated for parliamentary reform. On March 15, 2012, Liu tabled a bill to ensure that low-income seniors eligible for the Guaranteed Income Supplement would receive the retirement income top-up without having to apply. On May 29, 2014, Liu tabled a bill aimed at protecting homeowners from excessive bank penalties for mortgage prepayment. On June 16, 2014, Liu tabled The Intern Protection Act which was seconded by MP Andrew Cash. This bill sought to provide protection for interns working in federally regulated industries. The bill was updated on November 25, 2014. Liu also tabled a motion for a national strategy on eating disorders.
2015 Election and aftermath
Liu was defeated in the 2015 election by LiberalLinda Lapointe. Soon afterward, Liu denounced photos of Lapointe wearing an "unacceptable" Halloween costume—an Asian hat and robe—stating, "It's 2015. It's unacceptable to dress up as another culture, on Halloween or any other day." Soon after, Lapointe deleted the photos from her Facebook account.
