Yahoo! News' media bias is Left.
In August 2018, AllSides conducted an editorial review with our entire team — comprised of people on the left, right and in the center — and had a difficult time deciding if Yahoo! is Lean Left or Left.
We noted that Yahoo!'s media bias is revealed not so much in how their original content is reported, but in what they report and curate. Much of Yahoo!'s curated content comes from the Huffington Post, ThinkProgress, and other Left-leaning outlets. Yahoo! News' curation includes no articles or perspectives from the Right. We determined that Yahoo! News is consistently Left, and they dont distinguish clearly between Opinion, hard news and aggregrated content. Yahoo!'s media bias is largely revealed in the choices of what they choose to feature and aggregate.
About Yahoo! News
Yahoo! News is a news website that originated as an internet-based news aggregator by Yahoo!, according to Wikipedia. By 2011, Yahoo expanded its focus to include original content.