Ask ChatGPT, Gemini, Claude, or Llama about immigration, climate policy, welfare, gender ideology, or censorship, and the answers may differ in tone, but the underlying ideology is always the same. Multiple studies now find that leading language models lean left on contested political questions, often favouring progressive social assumptions and more interventionist economic positions. Researchers in Germany found strong alignment with left-wing parties across major models. Another study found instruction-tuned models were generally more left-leaning. A third concluded that larger models often become more politically skewed, not less. That is a serious problem for a technology sold as an impartial guide to information. If the tools increasingly used to explain the world already tilt in one direction, the question is no longer whether bias exists, but how far it shapes what millions of users come to regard as neutral truth.
For years, concerns about political bias in AI were brushed aside as anecdotal. That argument has weakened sharply. A 2025 study examining AI-based voting advice tools and large language models ahead of Germany’s federal election found that the models showed strong alignment, averaging more than 75 per cent, with left-wing parties, while their alignment with centre-right parties was below 50 per cent and with right-wing parties around 30 per cent. The authors warned that systems presented as neutral informational tools were in fact producing substantially biased outputs.
Another 2025 paper testing popular models against Germany’s Wahl-O-Mat framework reached a similar conclusion. It found a bias towards left-leaning parties and reported that this tendency was most dominant in larger models. The study’s title was blunt enough on its own: Large Means Left ...<<<
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