Jane Mayer, the New Yorker’s longtime star investigative reporter, has a fantastic new longform piece out detailing the extent to which the Fox News Channel has become propaganda television for the Trump administration.

Many of the basic points — like Fox’s bending of ethical standards to accommodate Sean Hannity, the collaborative relationship between Fox and Trump in shaping the news agenda, and the extent to which Trump at times seems to take his policy cues from Fox & Friends - will be familiar to Vox readers. But Mayer adds critical new insights into the arc of change at the network during a period when CEO Roger Ailes was deposed and then died, vice president Bill Shine left to become White House communications director, and the company’s owner Rupert Murdoch has restructured his media holdings and prepared to pass the baton to his son.

She also adds a couple of key scoops, including:

A Fox reporter named Diana Falzone had pieced together the entire Stormy Daniels story before the election, but network executives killed the story, demoted her, and then, after she sued them, reached a settlement with her that included a nondisclosure agreement.

“Trump ordered Gary Cohn, then the director of the National Economic Council, to pressure the Justice Department to intervene” and sue to block AT&T’s proposed takeover of Time Warner. (The DOJ did sue, though they denied this was due to improper interference from the White House, and ended up losing in court.)

“During the Bush Administration’s disastrous handling of Hurricane Katrina, Fox’s ratings slumped so badly, a former Fox producer told me, that he was told to stop covering it.”

Fox’s propaganda broadcasting matters. It’s a somewhat underexplored topic in political science research, but the information that’s available suggests that right-wing propaganda broadcasting — led by Fox but also including Sinclair Broadcast Group — has a decisive influence on American politics.

Conservative propaganda television is a big deal

A study by Emory University political scientist Gregory Martin and Stanford economist Ali Yurukoglu estimates that watching Fox News translates into a significantly greater willingness to vote for Republican candidates.

Specifically, by exploiting semi-random variation in Fox viewership driven by changes in the assignment of channel numbers, they find that if Fox News hadn’t existed, the Republican presidential candidate’s share of the two-party vote would have been 3.59 points lower in 2004 and 6.34 points lower in 2008. Without Fox, in other words, the GOP’s only popular vote win since the 1980s would have been reversed and the 2008 election would have been an extinction-level landslide.

And Fox is not the only thing out there. The Sinclair Broadcast Group is not a television network in a traditional sense. Instead, it’s a company that owns a disparate bunch of local television stations affiliated with all four major networks. But Sinclair does exert centralized control over the “local” television news broadcasts. And research from Martin and his colleague Josh McCrain found that when Sinclair buys a local station, its local news program begin to cover more national and less local politics, the coverage becomes more conservative, and viewership actually falls — suggesting that the rightward tilt isn’t enacted as a strategy to win more viewers but as part of a persuasion effort.

It would be ridiculous, of course, to argue that absent conservative propaganda broadcasting, Republicans would never win an election. What would happen, instead, is that in order to avoid constantly losing, Republicans would need to do more to bring key aspects of their policy agenda in line with public opinion and display less indifference to the prevalence of scandal-plagued individuals in party leadership. The conclusion, however, remains the same: Fox appears to be a decisive influence in making the Republican Party as currently constituted an electorally viable entity. And these studies are based on Fox's past — according to Mayer, the network has only become more propagandistic since the 2016 election.

Taking propaganda broadcasting seriously

On one level, everybody knows that television news is a big deal, everyone knows that Fox News is the most widely viewed cable network, and everyone knows that there is a complicated interrelationship between Fox and the GOP that is qualitatively different from the relationship between the Democratic Party and any media outlet.

But this relationship is rarely taken seriously enough in the analysis of American — or even global — politics.

It’s commonplace, for example, to treat the contemporaneous and narrow electoral victories of Donald Trump and Brexit in the United States and United Kingdom as revealing some important, deep-seated truth about the nature of global capitalism. An alternative explanation, however, is that Rupert Murdoch is a very powerful person in both US and UK media and he intervened decisively to put the Trump and Brexit phenomena over the top.

If true, lancing the boil of this particular destructive form of nationalism requires less a broad rethinking of the foundations of politics and more specific focus and the ability of a handful of propagandists to decisively alter the course of events. The past two or three years have seen a very intense social and political focus on the phenomenon of “fake news” spreading digitally on social media platforms. But while fake news is obviously not desirable, the evidence for its practical impact has been relatively slight compared to the evidence that mass opinion has been manipulated by traditional television broadcasting.