Another $136,000,000 down the drain

That's how much the Republican and Democratic conventions will be getting from the Presidential Election Campaign Fund. This is the fund that is generated from donations people make to it when filing their federal income tax. There are very few restrictions on how this money is spent; money has been spent on gifts, flowers, entertainment, consultants, etc.  But only the two major parties get any money.  Why doesn't the Green Party get some?  What is really achieved at these conventions?  They are just advertising for the candidates and, I suppose, a party for the delegates.  And these guys babble about the deficit!