Facebook has been doing their own internal research on election manipulation since at least 2010. Subtle UI variations can be targeted at users to effectively increase and decrease voter turnout as desired.<p><a href="https://www.scientificamerican.com/article/facebook-experiment-found-to-boost-us-voter-turnout/" rel="nofollow">https://www.scientificamerican.com/article/facebook-experime...</a>