This is already quite common with deepfakes of a politician's voice. While I agree on the potentially dystopian implications of this, it seems like it would be a huge improvement for a politician to put campaign funds into burning a little GPU time on answering specific questions from constituents (i.e. the LLM is reading their stated policy positions and simply delivering a tailored response), rather than wastefully plastering their name all over town.

Heh, I'm not even sure that would change much honestly. If I define a "lie" for the purpose of this post (and nothing else) as "a politician's claim they support a position during election season that they have manifestly not supported during their existing tenure as a politician", even cynical ol' me is a bit shocked by the amount of lying I've seen in this campaign. I'm not even talking about forward lying here about something they won't do for whatever reason once they get into office, I'm talking about their platform incorporating things that they were denouncing a year ago and vigorously voting against.