Each registered candidate with more than a certain number of signatures of support should be given a budget of money and pre-paid airtime on all major networks by the FEC, and that's it. Once it's out, it's out. All other contributions (including in-kind) to political campaigns are tantamount to bribery and should just be illegal.
It seems all but impossible to stop billionaires like Koch waging public relations campaigns. If nothing else they'll just buy entire media companies (c.f. Bezos and the Washington Post) and jump in to the fray Fox News style.
It is pretty likely that no-money-in-politics rules would be weaponised against smaller donators. I'm sure there are a bunch of wealthy people who would love nothing more than legal tools to shut down donation-driven groups like the Black Lives Matter website.
So me, as a private citizen, should be outlawed from making a sign on my front yard in support of a candidate with my own money? Should I be prevented from making my own website in support of issues and candidates I care about? Can I create YouTube videos with my own money to support issues and candidates I care about with my own money? This is supporting a candidate with funds outside of the public funds -- clearly illegal under your proposal! At what point is it no longer individuals expressing their own opinions in public?
I encourage you to actually read the Citizens United opinion. https://supreme.justia.com/cases/federal/us/558/310
Parties are allowed donations, but they can't spend more than x on election campaigns, no matter where the money is coming from. Time on public TV is kind-of regulated. TV ads are not really a thing, mostly billboards and print.
Can be circumvented though, since it requires parties to declare spendings correctly (and labelled correctly). "Oh, those fancy pens that look like merch? For work if course!" "We didn't rent this venue, a party-friend did"
Difficult to enforce with all the possible loopholes.
That doesn't really follow. Why should something be exclusively publicly funded just because it is in the public interest?
>All other contributions (including in-kind) to political campaigns are tantamount to bribery and should just be illegal.
What about completely anonymous donations? If the receiver doesn't know who is giving the money, how could it act as a bribe?
Re: completely anonymous donations, you mean, like Bitcoin? Generally any legitimate business has to report where it’s money came from - even if just for tax purposes - otherwise it’s a whole new crime. Remember, under my model, all contributions would be banned. Then, candidates would have to compete on platforms instead of fundraising.
It would be pretty hard to set things up so that donations were not only anonymous, but non-verifiable (as in, it should be impossible for a donor to prove to a recipient that they were the one who donated). This attribute in voting systems is part of 'coercion resistance' (as in, if you can't prove how you voted even when you want to, there is no point in trying to coerce you into voting a particular way). In a payments system, we can call it 'corruption resistance'.