No, you are equating media attention with free speech. Everyone has a right to free speech. You have no right to force people to pay attention to you. Broadcasting is a business. Putting your dumb, sixth rate candidates on the air costs them money. If you can't pay to have air, then you are absolutely suggesting the government take their property by force if you want them to broadcast your stupid candidates.
The thing is, I agree with the idea that government should subsidize political speech to some extent. However, I cannot forgive the rank hypocrisy of Libertarians, and other right wing whiners, having created this big money politics by over years eroding good government practices with such notions that spending money=free speech, government intervention in anything other than national defence is entirely wrong, that companies should be completely unregulated, now have a fit when the system they carefully crafted suddenly doesn't work in their favor. It confirms my suspicion that Libertarians are unprincipled narcissists, who want rules and government only to service themselves and their privileges.
You whine about having to pay taxes to send poor people to school, but you want the government to subsidize your incompetent political party.
You made this bed, now die in it.