Mother Jones was founded as a magazine for investigative journalism in 1976, named for trade union activist Mary Harris Jones, a key opponent of child labor. Since its founding, the publication has been widely received as progressive and liberal, though the it insists that its only bias is for the truth. So, how biased and reliable of a news source is Mother Jones?

How Factual Is Mother Jones? 

The Factual’s news rating algorithm analyzes more than 10,000 articles a day along four metrics: author expertise, publication history, writing tone, and cited sources and quotes. (See our How It Works page to learn more.) For this study, we analyzed 1,000 articles each from 245 major news sources.

Over a dataset of 1,000 articles, Mother Jones scored an average Factual Grade of 71.3%. This is well above the 61.9% average for all 245 news sources that we analyzed and places the site in the 89th percentile of our dataset. 

Several factors contribute to these high scores, including high scores for author expertise and cited evidence. For example, articles from Mother Jones tend to be written by authors with strong topical expertise. This suggests that authors routinely cover the same subject for the site, delivering informed context and reporting. Likewise, articles from the site provide ample sourcing in the form of links and direct quotes. However, these otherwise high scores are pulled downward by highly opinionated language in some articles (more details below).

Like any news source, scores for Mother Jones varied widely based on factors like author expertise and cited evidence. For example, some scored above 90%, while others scored below 60%.

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How Opinionated Is Mother Jones?

The Factual measures how opinionated an article is using a sophisticated natural language processing algorithm. This produces a score we call the Writing Tone. For this metric, the algorithm looks for signs of subjective commentary (e.g., first person pronouns, unnecessary adverbs), as well as the emotional nature of selected words, and sees how prevalent they are for a given length of text. Text which is less opinionated gets higher ratings, with “0” being the most opinionated and “1” being the most neutral.

Mother Jones had an average Writing Tone score of 0.39, placing it in the 19th percentile in our dataset. This suggests that articles from the site are often highly opinionated, using biased or loaded language. This may indicate that articles are at times written to elicit an emotional response from the reader.

What Is the Political Bias of Mother Jones?

The Factual classifies news sites by political bias as either Left, Moderate Left, Center, Moderate Right, or Right. This classification comes from third-party assessments from media bias organizations such as AllSides and Media Bias/Fact Check. Based on this data, The Factual assigns Mother Jones a “Left” bias. 

AllSides classifies Mother Jones as “Left” based on an independent review and 18,633 community ratings. Over three-quarters of those respondents classify the site as having a “Left” bias. AllSides notes that Mother Jones is commonly referred to as liberal, so much so that the site’s FAQ addresses the issue: “Our bias is for the truth, for fairness and justice, for a democracy in which facts matter and all can participate.” 

Media Bias/Fact Check (MBFC) classifies Mother Jones as “Left-Center” due to “story selection that moderately favors the left.” The site also receives credit for highly factual reporting and a clean fact-check record. Though Mother Jones has a reputation for favoring left-leaning causes, the site at times publishes content that is favorable of Republicans (“This Deep-Red State Decided to Make a Serious Investment in Preschools. It’s Paying Off Big-Time.”) as well as content that is critical of Democrats (“Why Are Biden’s Spokespeople Being All Authoritarian?”).

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Who Owns Mother Jones?

The non-profit Foundation for National Progress owns Mother Jones. The site derives its funding from donations, subscriptions, advertisements, and institutional grants, including from the MacArthur Foundation, which has contributed over $2 million since 1998. Mother Jones claims that the current ownership structure, with funding coming primarily from readers and donors, allows for editorial independence, stating “we don’t report to any stockholders, owners, or corporate conglomerates.”

Why Does It Matter?

News articles always have some bias because all authors have some frame of reference within which they describe a story. Political bias ratings are helpful in understanding this framing. However, it can be more beneficial to know how factual an article is based on quantifiable metrics that can be seen across the media ecosystem, such as cited evidence, author expertise, and writing tone. This is what The Factual ascertains. 

Reading several, highly rated articles from across the political spectrum helps counter the bias of any news source or story. To have the day’s most factual news stories delivered to your inbox every morning, subscribe to our daily newsletter.

Published by Phillip Meylan

Phillip is a writer, researcher, and editor. At The Factual, he leads research efforts that utilize the company's ever growing data on the media ecosystem. He is also a contributor to FP Analytics, Foreign Policy's research and advisory division, and an adjunct fellow with the Center for Strategic and International Studies.