The majority of Americans were not exposed to fake news during the 2016 election
A study of more than 16,000 Twitter users found that only a small fraction of fake news spread during the 2016 presidential election. Only a small number saw the majority of misinformation, and those that saw it were typically older and politically conservative. Therefore the effect of fake news, and in particular its effect on swing states may have been less pervasive on social media during the election than originally thought.
Even a small amount of fake news could have an impact on the political process and therefore on the US presidential election.