Cambridge Analytica already did this for the past U.S. election. It had an app that told canvassers which doors were worth knocking on and what sort of dialogue

Cambridge Analytica already did this for the past U.S. election. It had an app that told canvassers which doors were worth knocking on and what sort of dialogue to use depending on things like the person's estimated neuroticism and other traits. It'll only get more sophisticated.