So you predict if they have a general mild preference for the Democrats, then mine if they once reacted strongly on certain triggers: gun control, weak leadership, immigrants, drug addiction, patriotism, racism, elitism, religion & conspiracy. Then you personalize the message for them: Hillary will take away all guns, Hillary is ill and frail, The Democrats let copkillers enter the USA, China ships fentanyl to American youth, and wants to steal your steel workers' money, look at these violent BLM protesters and one snippet of Clinton talking about superpredators, there is a deep state which let Obama play pingpong in the basement of a pizza place, we have a non-crooked Christian Vice President and Hillary smells of sulfur.