| Party | Description |
| Conservative | August 7, 2015: Hochelaga candidate Augustin Ali Kitoko was removed as a candidate after sharing a Facebook photo album from New Democrat leader Tom Mulcair. August 21, 2015: Rosemont—La Petite-Patrie candidate Gilles Guibord was no longer a candidate after a number of online comments on Le Journal de Montréal were uncovered, including blaming First Nations for not integrating into European culture, claiming the French, not the Mohawks, have ancestral rights to Quebec, and speaking about man's "authority over women." August 24, 2015: Ahuntsic-Cartierville candidate Wiliam Moughrabi deleted his Facebook account after violent and sexist posts were discovered. August 25, 2015: Joliette candidate Soheil Eid apologized after comparing New Democrat leader Tom Mulcair's statements regarding the Energy East pipeline project to Nazi propagandist Joseph Goebbels by quoting "Mentez mentez, il en restera toujours quelque chose" ("Lie lie and something will always remain"). September 6, 2015: Scarborough—Rouge Park candidate Jerry Bance was dropped from the party after a video from CBC's Marketplace surfaced showing an appliance repairman named Jerry urinating into a mug in a client's kitchen. It was later discovered that it was Bance himself. It became a popular meme on Twitter under the hashtag . September 7, 2015: Toronto—Danforth candidate Tim Dutaud was forced to resign his candidacy after it was discovered he was YouTube user UniCaller, who has uploaded videos of himself pretending to orgasm while on the phone with female customer service representatives, and mocking people with mental disabilities. September 8, 2015: Bay of Quinte Conservative Electoral District Association board member Sue MacDonell was fired after she posted on Facebook that Cree woman and newly crowned Mrs. Universe Ashley Callingbull-Burnham was a "monster" and a "smug entitled Liberal pet." September 15, 2015: Bonavista—Burin—Trinity candidate Blair Dale was removed from his candidacy after racist and sexist online comments surfaced, including saying that abortion should not be an option for "irresponsible" people. September 17, 2015: Prime Minister Stephen Harper's use of the appellation "Old Stock Canadians" during a nationally televised debate with Liberal Leader Justin Trudeau, and NDP Leader Tom Mulcair created a Twitter frenzy and substantial media coverage. Without specifically repeating the phrase, Harper later claimed to be referring to Canadians whose families have been here for "one or more generations." October 1, 2015: Sackville—Preston—Chezzetcook candidate Robert Strickland was lambasted after Facebook remarks made by Strickland (or a staffer) told a young voter to "gain some experience in life" before engaging in political discussions. October 1, 2015: St. Catharines incumbent Rick Dykstra was alleged to have purchased six Cîroc vodka bottles for underage girls at a local nightclub and then had his campaign offer bribes in exchange for their silence, a charge Dykstra denied. October 6, 2015: Mississauga—Malton candidate Jagdish Grewal was dropped from the party after an editorial by Grewal was printed in the Punjabi Post titled "Is it wrong for a homosexual to become a normal person?" in which he defended gay-conversion therapy to return gay youths to their "normal" heterosexuality. He remained on the ballot. October 10, 2015: The Economist said that "Muslim-bashing" had entered the election campaign, led primarily by the Conservatives, through the issue of the public wearing of the niqab. See also: Zunera Ishaq |
| NDP | August 10, 2015: Kings—Hants candidate Morgan Wheeldon resigned his candidacy after a Facebook comment surfaced where he is accused of saying Israel intended to "ethnically cleanse the region." September 8, 2015: Shawn Dearn, Tom Mulcair's director of communications apologized after tweets came to light criticizing the Catholic Church, including stating that the "misogynist, homophobic, child-molesting Catholic church" is no moral authority, and used an expletive to refer to Pope Benedict XVI after the pope denounced Britain's gay equality rights. September 20, 2015: NDP Leader Tom Mulcair was forced to apologize for using the term "Newfie" in a derogatory fashion as a synonym for "stupid" during a heated exchange in the Quebec legislature in 1996. September 21, 2015: Winnipeg Centre MP Pat Martin apologized for offensive language. Martin called Green Party candidate Don Woodstock a "son of a bitch" during a candidates debate the previous week. In a Huffington Post article, Martin was quoted as saying Liberal candidate Robert-Falcon Ouellette is a "political slut" because he had considered running for different political parties before running for the Liberals. September 22, 2015: Hamilton West—Ancaster—Dundas candidate Alex Johnstone apologized for Facebook comments from seven years prior, where she commented on photos of the Auschwitz concentration camp with "Ahhh, the infamous Pollish [sic], phallic, hydro posts." She claimed to not know that the picture was of the infamous concentration camp. September 24, 2015: Charleswood—St. James—Assiniboia—Headingley candidate Stefan Johansson was asked to step down as candidate after social media posts from three years earlier emerged where he compared the Haredim sect of Judaism to the Taliban and other extremists. October 7, 2015: Brampton East candidate Harbaljit Singh Kahlon, who once told a television programme same-sex marriage could lead to polygamy and public nudity, offered an apology and said he no longer held those views. |
| Liberal | August 18, 2015: Calgary Nose Hill candidate Ala Buzreba stepped down as candidate after offensive Twitter tweets from several years earlier were uncovered, including "Go blow your brains out you waste of sperm" and "Your mother should have used that coat hanger." September 10, 2015: South Surrey—White Rock candidate Joy Davies resigned her candidacy after Facebook comments surfaced where she suggested that marijuana reduced family violence, that growing marijuana in a home poses no harm to children, and that the Canadian Cancer Society was "another outlet for big pharma." September 10, 2015: Peace River—Westlock candidate Chris Brown apologized for offensive tweets he made in December 2009, during a bout of alcoholism after the death of his wife. September 16, 2015: Sturgeon River—Parkland candidate Chris Austin had his candidacy removed because of views that "are irreconcilable with the values" of the Liberals, including saying Stephen Harper "has turned our Nation's Capital into a War Zone as his thirst for War" in the aftermath of the Parliament Hill shootings, and suggesting that the RCMP are the "Canadian Gestapo." September 28, 2015: Cowichan—Malahat—Langford candidate Maria Manna resigned her candidacy after Facebook comments surfaced questioning the events of the September 11 attacks. September 30, 2015: Victoria candidate Cheryl Thomas resigned after past social media posts came to light, including referring to mosques as "brainwashing stations" and saying "the oppressed of the Warsaw ghettos and the concentration camps have become the oppressors." As the candidate deadline (September 28) had already passed, her name remained on the ballot. October 14, 2015: Dan Gagnier, a co-chair of the Liberal Party's national campaign, stepped down from his position after the reveal of an email indicating he had provided advice to TransCanada on how to lobby a potential Liberal government regarding energy issues. |
| BQ | Late August 2015: Mégantic—L'Érable candidate Virginie Provost was embarrassed after a survey asking what she would need in the event of a nuclear attack was revealed. Her answer was that she would bring "her cellphone, a penis and chips." September 19, 2015: Ville-Marie—Le Sud-Ouest—Île-des-Sœurs candidate Chantal St-Onge apologized after sharing an anti-Islam Pegida post on Facebook. |
