Given how information is dispersed and consumed these days, there are literally thousands of information producers (or at least sources to view that info). In the world of $50 vouchers, there are either thousands of producers competing for pennies if the system is open or a few big producers specified who can receive the vouchers. If it's the former, information producers will probably still be in the sorry state they are today. If it's the latter, I think people might have a problem with the idea of getting their news from an oligarchy of producers.
To keep it nonpolitical, the advertising could be of the form of a full-page daily report laying out the which bills are being considered by which houses, what the Supreme Court is doing, the President's agenda for the day, and other strictly-true government business.