I believe that because Reddit is generally left-leaning and the majority of those users are opposed to AI, we may see a disproportionate rise in AI-generated right-wing content, which could influence public opinion. And the pentagon also showed interest in using LLMs to gaslight people.
The political bias of AI will be set by those tuning the models. Now mix in a bunch of voters asking LLMs who they should vote for, because people will outsource their thinking any chance they get. The result is model owners being able to sway elections with very little effort.