In addition to its normal usages, (not nice, and has the meaning of), mean can also be used as a mathematical term to mean the average of a set of numbers. I always figured this was roughly the sense in which the word is being used in GMT.
Most people who pay attention to politics assume that George Soros is the largest financier of leftist election candidates. While he may have the largest non-profit funding network, Soros is not the person who spent the most directly helping candidates through superPACs or other organizations in 2016. That person is Tom Steyer, a former hedge fund executive who made his fortune in the fossil fuel industry. The Washington Post reported Steyer spent $66.3 million helping Democrats in the 2016 cycle, and the Washington Times reports that the final spend was north of $85 million.
George Soros announced that he has given $1 million to Media Matters âto hold Fox News accountable for the false and misleading information they so often broadcast.â Fox commentators frequently describe Media Matters, a frequent Fox critic, of being funded by Soros, but Media Matters has long denied that connection.