Over a nearly two-year investigation, Special Counsel Robert Mueller has shown the sheer breadth of the Russian effort to meddle in the 2016 election. From hacking into campaign email systems to using social media to stir up voters, the Russian effort hit at a number of soft spots in the American electoral system. Experts say Russia didn’t stop there either, using similar strategies to attempt to influence the 2018 elections, and, they expect, the 2020 elections as well.