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Fact-Checker Bias Analysis

Transparency You Deserve: Who's Really Checking the Facts?

Why This Matters

Fact-checking organizations play a crucial role in our democracy, but they're not immune to bias. While most maintain high factual accuracy, subtle biases can emerge through story selection,language choices, and disproportionate scrutiny of one political side.

Recent studies from Stanford (2024), Duke University, and Harvard's Misinfo Review have documented these patterns. Below, we transparently show how independent evaluators rate major fact-checkers, so you can make informed decisions about your sources.

Rating Methodology

AllSides Bias Rating

Based on multi-partisan reviews, blind surveys, and editorial analysis. Rates sources from Left to Center to Right.

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MBFC Bias Rating

Media Bias/Fact Check evaluates bias via wording, sourcing, and story choice. Factual scores based on failed checks and transparency standards.

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AFP Fact Check

AllSides Rating
Left
MBFC Bias
Least Biased
Factual Accuracy
Very High

Agence France-Presse; global scope, but rated left for story emphasis.

AP Fact Check

AllSides Rating
Center
MBFC Bias
Least Biased
Factual Accuracy
Very High

Part of Associated Press; strong on neutrality and global verification.

BBC Reality Check

AllSides Rating
Center
MBFC Bias
Least Biased
Factual Accuracy
Very High

BBC's fact-checking unit; focuses on public discourse, strong impartiality mandate.

CheckYourFact

AllSides Rating
Right
MBFC Bias
Right-Center Bias
Factual Accuracy
High

Owned by Daily Caller (right-leaning); one of few right-leaning IFCN signatories.

FactCheck.org

AllSides Rating
Lean Left
MBFC Bias
Least Biased
Factual Accuracy
Very High

Non-partisan; Annenberg-funded; disproportionate focus on Republican claims per reviewers.

Full Fact

AllSides Rating
Center
MBFC Bias
Least Biased
Factual Accuracy
High

UK-based but covers US; independent non-profit with transparent methodology.

Lead Stories

AllSides Rating
Lean Left
MBFC Bias
Least Biased
Factual Accuracy
High

Facebook partner; uses AI for hoax detection; slight left tilt in phrasing.

NPR Fact Check

AllSides Rating
Lean Left
MBFC Bias
Left-Center Bias
Factual Accuracy
High

NPR-embedded; high accuracy but aligns with NPR's left-center editorial tone.

PolitiFact

AllSides Rating
Lean Left
MBFC Bias
Least Biased (slight left lean)
Factual Accuracy
High

Pulitzer winner; uses "Truth-O-Meter"; critics note more checks on Republicans.

Reuters Fact Check

AllSides Rating
Center
MBFC Bias
Least Biased
Factual Accuracy
Very High

International wire service; minimal bias, high sourcing standards.

Snopes

AllSides Rating
Lean Left
MBFC Bias
Least Biased
Factual Accuracy
High

Focuses on urban legends and viral claims; occasional left-leaning story selection.

Washington Post Fact Checker

AllSides Rating
Lean Left
MBFC Bias
Left-Center Bias
Factual Accuracy
High

Uses "Pinocchios" scale; embedded in WaPo, which has left-center overall bias.

So What Makes PoliticalLiars.com Different?

We believe in transparent bias tracking, community-driven fact-checking, and equal scrutiny of both parties. No hidden agendas. No selective outrage. Just the facts, from all sides.

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Disclaimer: Bias ratings are perceptual and evolve over time. We've sourced ratings from independent evaluators (AllSides, MBFC) as of late 2025. For complete methodologies, please visit their respective websites.

This page is updated quarterly to reflect the latest ratings and research.