I can trot out my usual question: is this gonna change how anyone votes? Seriously, is it?
It depends what you mean by “changing how people vote”. If you meant “abruptly switching to the other side”, then the answer is likely negative. After all, suppose that you’d just read the opposite news: some questionable company helped manipulate things, hoping to make your side win. Would you automatically change your vote in favour of the opposite side? I wouldn’t.
Sure, such affair would leave a foul taste in my mouth and I’d want things to improve. Yes, if my elected officials were directly implicated, I’d certainly consider possible (and sensible) alternatives with the same general alignment (but alternatives are often scarce or inexistent), while retaining some amount of pragmatism. Setting aside the mindset of radical one-issue voters, there are many concerns to simultaneously consider, and compromises to be made, when casting a vote. So, I don’t find it shocking that the answer to your question is, in all likelihood, “no”.
That being said, as long as it is covered in the media and talked about, this kind of abuse can have some small but lasting and compounding impact. Of course, one can dream that citizens would forcefully communicate their disapprobation to their elected representative, in an attempt to stimulate positive change (such as passing laws instituting penalties for such corrupt practice, and ensuring that those laws are properly enforced). But even in a fairly passive society, after abuses have occurred repeatedly, popular indignation will indeed begin to influence poll results.
Unfortunately, mounting exasperation can lead to people haphazardly jumping from one extreme to another (or even abandoning moderation to embrace an extreme), and that has rarely been a good thing. As recent (and no-so-recent) history has all too well illustrated in a number of countries, years of unbridled corruption can drive despairing people to enthusiastically vote for the worst demagogic scumbag who’s promised to “clean house” by any means.
In short, I prefer to hope that this type of news does not directly change the way people vote, but that it helps shape people’s perception and change the way people talk about political issues and about the process by which political decisions are made. And I do hope that we get laws and enforcement that puts perpetrators of such stunt (as well as their complicit beneficiaries) behind bars for a dissuasive length of time.