Jane Mayer writes:

For two years, observers have speculated that the June, 2016, Brexit campaign in the U.K. served as a petri dish for Donald Trump’s Presidential campaign in the United States. Now there is new evidence that it did. Newly surfaced e-mails show that the former Trump adviser Steve Bannon, and Cambridge Analytica, the Big Data company that he worked for at the time, were simultaneously incubating both nationalist political movements in 2015.

Emma Briant, an academic expert on disinformation at George Washington University, has unearthed new e-mails that appear to reveal the earliest documented role played by Bannon in Brexit. The e-mails, which date back to October of 2015, show that Bannon, who was then the vice-president of Cambridge Analytica, an American firm largely owned by the U.S. hedge-fund billionaire Robert Mercer, was in the loop on discussions taking place at the time between his company and the leaders of Leave.EU, a far-right nationalist organization. The following month, Leave.EU publicly launched a campaign aimed at convincing British voters to support a referendum in favor of exiting the European Union. The U.K. narrowly voted for the so-called Brexit in June, 2016. The tumultuous fallout has roiled the U.K. ever since, threatening the government of the Conservative Prime Minister, Theresa May.

Bannon did not respond to requests for comment. But his name and private e-mail address appear on the chain of three e-mails in October, 2015, between Brittany Kaiser, the director of program development at Cambridge Analytica, and Arron Banks, who headed the Leave.EU campaign and referred to himself in the title of his memoir as one of “The Bad Boys of Brexit.” Banks could not be reached for comment regarding the e-mails, which were first published Saturday by the British Web site openDemocracy.

The precise role played by foreign entities in promoting and possibly funding Brexit has been clouded in mystery and controversy. British law forbids foreign contributions to its political campaigns—just as U.S. law bars foreign campaign contributions. The laws are designed to prevent international manipulation of domestic affairs. Executives working for Cambridge Analytica, which filed for bankruptcy this spring, have categorically denied that the firm was paid to do any work for the Leave.EU campaign. The new e-mails do not contradict that, but show that, even if the firm was not paid for its services, it laid some of the early groundwork for the Leave.EU campaign. The e-mails show that Banks and others in the Leave.EU leadership met with Cambridge Analytica executives in 2015, and discussed what Banks called a “two-stage process” that would “get CA”—Cambridge Analytica—“on the team.” [Continue reading…]