Former Washington Post fact-checker Glenn Kessler admitted on Tuesday that the paper relies heavily on a liberal readership, warning that owner Jeff Bezos's efforts to shift its editorial stance in a more bipartisan direction could alienate its core audience. " The Post 's liberal columnists generated huge traffic—that's because of the liberal slant of the readership—and now they've all quit," Kessler wrote on Substack, just days after he left the paper. "Every day, I checked the daily traffic