https://www.theguardian.com/media/2019/oct/06/will-fake-news-wreck-next-british-general-election

Have the social media giants cleaned up their act since the scandals of 2016? We give the big names a healthcheck

The next general election campaign has already started. We do not know the date of the vote, but we know that one is coming – and so do Britain’s political parties, which have been steadily stepping up their spending in the largely unregulated world of online advertising. In the last 90 days, the Tories have spent almost £100,000 on Facebook adverts, with the Brexit party spending even more: £107,000.