Is it bias, though, if the AI is trained on the materials of the parties involved, rather than that of public opinion?
A fellow I know has built exactly this, specifically for analysing the various Dutch political parties positions on things, their polices, constitutional stance, and so on:
So maybe what this story is really about, is old-school-media being terrified of losing eyeballs to a new generation of voters who, rather than listen to the wisdom of the journalistic elite, would rather just grep for details on their own dime, and work things out vis a vis who gets the power and who doesn't ...
If AI gives people a chance to actually understand the political system, like as in actually and properly, then I can see why legacy media would be gunning for it.