Would you turn down no one?
Your channell would be giveing equal time to lots of partys and individuls who have tiny public support or intrest.
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Right. No one with a demonstratable constituency, determined by petition signatures, could be refused their equal share of free airtime to present their position: Democrats, Republicans, Libertarians, Socialists, Communists, Vegetarians, even Sirs if he could get the signatures.
EVERY channel would have to present equal time to all candidates.
My guess is that the number of people who would want to hear David Duke would vastly outnumber the audience of those who watch infomercials on magic mops, Get Rich in Real Estate Shows and Gazelle Exercise devices.
There would be only a period of maybe three weeks of campaign commercials on every channel and radio station, before the primaries and general elections. As I said, it would be what they would have to do in return for their license to use the public airwaves.