Journalists could utilize AI to parse large volumes of speeches and remarks positions over time. It could show is evolution of their positions, group them into networks of people saying the same or similar things, identify inflection points and highlight events that influenced the change.

Think of the shift highlighted by 538 of Republicans dropping discussion of “gay marriage” in favor of “religious liberty”. (http://fivethirtyeight.com/features/religious-liberty-has-replaced-gay-marriage-in-gop-talking-points/)