We need to be careful to prevent campaign finance restrictions from stopping people from publishing works through the usual publication outlets.

These outlets should not be held responsible for the content of the works they are used to distribute in the usual ways.

However, we can distinguish that from the case where a corporation pays for election publicity. If a company rents theaters to show a movie that is for or against a certain candidate, that is clearly a campaign expenditure by the company (but not by the theaters).