The left-leaning Huffington Post, one of the most trafficked news websites, is changing course on its Donald Trump coverage.

Since March, the Post has maintained that Trump was not a serious presidential candidate, and relegated all coverage of Trump to the site's "entertainment" section, rather than its politics section.

Post founder and Editor-in-Chief Arianna Huffington penned a blog post on Tuesday that said Trump's latest comments on Muslims mean that his campaign deserves new scrutiny. On Monday, Trump called for a "total" ban of Muslims trying to come into the U.S.

Huffington said that Trump's campaign has "morphed into something else: an ugly and dangerous force in American politics."

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