I think the proposed theory is that there is a rather broad class of could-be voters that typically don't engage in politics or vote. One example of a small cat

I think the proposed theory is that there is a rather broad class of could-be voters that typically don't engage in politics or vote. One example of a small category of people would be klansmen, I imagine for a group that is often sidelined they probably think their vote is wasted and therefore don't typically show up at the ballot on election day. If your party can identify and connect with those individuals and spark a sense of outrage in them, you are likely to be able to get some portion of them to the ballot on election day. So it is more meta than educating somebody on Trump/Clinton's politics; it is more about behavioral manipulation via outrage, fake news, etc. The goal isn't to change knowledge or opinions (which is extremely difficult), it is to fan the flame of targeted groups' collective outrage enough to bump election day participation. In many places getting just a 1-3% edge is the difference between winning and losing the election. My personal takeaway from this is that improving general access to the ballot by making it easier to participate and vote should obviate the effectiveness of this strategy. Each step approaching 100% voter participation forces smaller and smaller returns on the strategy of motivating extremist voters.