Neutrality and ideological bias
In a July 2010 interview with Kathryn Schulz from Slate, Sanger said: "If you're talking about political biases, I actually think that that's one of Wikipedia's least-worst problems. It's really not as bad as the people at, say, Conservapedia seem to think. I do think that there is a liberal bias on most topics where such a bias is possible." Those individuals, according to Sanger, "who work the most on Wikipedia tend to be really comfortable with the most radically egalitarian views. And those people tend to be either liberals or libertarians." Sanger also argued that "I think the kind of biases that are in some ways more interesting and more pervasive have to do with individual biases not on political issues but on a host of very specific academic issues. An article can reflect the bias of a few people who just happen to be most motivated to work on it. This is a general problem with Wikipedia".
In March 2014, Sanger stated that "In some fields and some topics, there are groups who 'squat' on articles and insist on making them reflect their own specific biases. There is no credible mechanism to approve versions of articles." In December 2015, Sanger said that "Wikipedia itself might be thought to be committed to such a completely international neutrality, and in places, its policies have seemed to hold it to that utopian ambition. But of course it cannot be and it is not. The English Wikipedia's articles about science most clearly betray its Western and especially Anglo-American provenance, and articles about, for example, philosophy are mostly about Western philosophy. I see nothing really wrong with that." Sanger also said that "My teenage ire at shamefully biased writers and editors found expression in Nupedia's neutrality policy, which in turn became Wikipedia's", calling himself "a zealot for neutrality".
In a May 2019 interview with Sophie Foggin of 150Sec, regarding the website's neutrality, Sanger said: "Wikipedia has long since decided to turn the other cheek when influential editors make articles speak with one point of view, when they dismiss unpopular views, or when they utterly fail to do justice to alternative approaches to a topic." Sanger also stated that Wikipedia "never did come up with a good solution" for "how to rein in the bad actors so that they did not ruin the project for everyone else" and that "Wikipedia is a broken system as a result".
In a blog post in May 2020, Sanger described Wikipedia as "badly biased" and as favoring left-wing and liberal politics. In his opinion, portions of the Donald Trump Wikipedia article are "unrelentingly negative", while the Barack Obama article "completely fails to mention many well-known scandals". He listed other topics he argued are presented with a liberal and left-wing bias, including the topics of Hillary Clinton, abortion, drug legalization, religion, and LGBT adoption. In particular, Sanger said that Wikipedia, in describing many of Trump's statements as "false", established the website's biases. Sanger commented in the blog post: "It is time for Wikipedia to come clean and admit that it has abandoned NPOV (i.e., neutrality as a policy)." Regarding Wikipedia's current neutrality policy, Sanger said that "it endorses the utterly bankrupt canard of journalistic 'false balance', which is directly contradictory to the original neutrality policy. As a result, even as journalists turn to opinion and activism, Wikipedia now touts controversial points of view on politics, religion, and science".
In a February 2021 interview with Fox News, Sanger stated that Wikipedia's "ideological and religious bias is real and troubling, particularly in a resource that continues to be treated by many as an unbiased reference work". In a February 2021 interview with Carrie Sheffield on Pluto TV, Sanger criticized Wikipedia's coverage of socialism, saying that "when schoolkids go, and they look up answers to questions about the meaning of 'socialism' ... they're going to find an explanation that completely ignores any conservative, libertarian, or critical treatment of the subject", "And that's really problematic. That's not education. That's propaganda." He argued that Wikipedia was originally "committed to neutrality" until "about 10 years ago" when "liberals or leftists made their march through the institutions ... and basically took [Wikipedia] over", adding that "They started getting rid of citations from conservative sources, even conservative sources that were cited in order to explain the conservative point of view. At least in some cases, that was the case, and more and more, certain points of view were castigated and labeled". When asked about Wikipedia's reaction to his criticism, Sanger said that "They ignore me" and that "They don't care what I say, and the feeling is mutual."
In a July 2021 interview with Freddie Sayers of LockdownTV, Sanger opined that Wikipedia is not trustworthy and that its contributors have a left-leaning bias. According to Sanger, Wikipedia's coverage of U.S. President Joe Biden contained "very little by way of the concerns that Republicans have had about him" or the Ukraine allegations. He further adds that since Wikipedia encourages the use of secondary sources instead of primary sources, Wikipedia's content is heavily influenced by coverage from center-left-wing media outlets, saying that "You can't cite the Daily Mail at all. You can't cite Fox News on socio-political issues either. It's banned. So what does that mean? It means that if a controversy does not appear in the mainstream center-Left media, then it's not going to appear on Wikipedia." Despite having a neutrality policy, he says that the viewpoint of Wikipedia articles represent the consensus viewpoints and that users are prohibited from adding counter-arguments to established views, which would help create more neutral articles. He argued that Wikipedia can give a "reliably establishment point of view on pretty much everything" and that "if only one version of the facts is allowed then that gives a huge incentive to wealthy and powerful people to seize control of things like Wikipedia in order to shore up their power. And they do that."
In a July 22, 2021, interview with Tucker Carlson on Fox News, Sanger said that Wikipedia allowing anonymous contributors had resulted in the website being taken over by criminal bodies, as well as by corporations and governments. Sanger also said that "I don't know that there is a way to fix Wikipedia within Wikipedia. It's an institutionally conservative place".
In an August 2021 interview with The Sunday Times of London, Sanger objected to Wikipedia's description of alternative medicines, such as homeopathy, as "pseudoscience". He believed such a definition lacked true neutrality. Sanger also argued that "If you don't kowtow to the right people, you won't even be allowed to participate." Of Wikipedia as a whole, he said: "I advise against using it, even to conscientious students." Of Jimmy Wales' role in Wikipedia, Sanger said that: "[There was] this kind of idealism that Jimmy Wales had ... that if you just open up the encyclopaedia to anybody, then because people are generally good, they will do the right thing. I think perhaps he still has that view. But frankly, that really wasn't ever my view. I was always a bit worried about what might happen if ideologues took over as naturally they would want to if it was at all successful. I think that actually is what happened." According to The Sunday Times, Wikipedia denied accusations from Sanger of having a particular political bias, with a spokesperson for the encyclopedia saying that third-party studies have shown that its editors come from a variety of ideological viewpoints and that "As more people engage in the editing process on Wikipedia, the more neutral articles tend to become".
In a March 2022 interview with Fox Nation, Sanger once more said that Wikipedia had abandoned its neutrality policy and that "the kinds of people that are allowed to have any influence on Wikipedia have been narrowed down greatly to essentially people who agree with the establishment left." In his opinion: "The left, frankly, is relentless when it comes to stating their point of view and using the organs of mass media—and Wikipedia is part of their mass media I think—to shape the world". Sanger also said that Wikipedia originally had a strong commitment to neutrality, saying: "We promulgated a policy, the neutrality policy. And it was very clear in the beginning. And I think I really hammered it a lot. In the two years that I was with the organization, I really drove that neutrality policy. And I articulated a defense."
Sanger expresses support for additional scrutiny of Wikipedia users, saying that "admins and those with significant authority in the system should be as easily named and shamed as any ordinary journalist".
In September 2025, Sanger published a list of proposed changes to Wikipedia, titled "The Nine Theses", on his blog and his Wikipedia user page. Sanger was interviewed about his critiques on the Tucker Carlson podcast, where he commented on what he saw as the degrading of neutrality policies and the "blacklisting" of certain conservative sources. He also claimed that intelligence agencies like the CIA may have influenced some direction or content on Wikipedia. Sanger's proposals were received well by members of the Republican Party and second Trump administration, including David Sacks and Elon Musk, with the latter announcing Grokipedia the same day he shared and praised Sanger's proposals. Reception was mostly negative among English Wikipedia's editing community, particularly towards Sanger's proposal to require editors with advanced permissions to reveal their real life identities.
Sanger was banned in June 2026 from English Wikipedia under Wikipedia policies for "canvassing", or brigading, to influence internal discussions of his proposed "WikiProject Intellectual Diversity" and for engaging in other disruptive behavior. He criticized the ban and process, calling it a "kangaroo court" and accusing Wikipedia administrators of not providing formal charges, due process, or neutral adjudication.
