Sen. Cruz Says Wikipedia Has ‘Left-Wing Bias’

WASHINGTON, Oct. 9, 2025 — A top Republican lawmaker quoted a Wikipedia co-founder as his authority in saying most editors on the site have biases against “conservatism, traditional religiosity, and minority perspectives on science and medicine.” 

Senate Commerce Committee Chairman Sen. Ted Cruz, R-Texas,  sent a letter to Wikimedia Foundation CEO Maryana Iskander requesting detailed information about what he described as ideological bias on Wikipedia and within the foundation itself.

In the letter, Cruz said Wikipedia’s influence created concerns about neutrality, noting the platform’s vast reach and role in training large language models. He cited research by the Manhattan Institute that suggested Wikipedia articles reflect a left-leaning bias and argued that the site’s “neutral point of view” policy was no longer upheld.