As a member of a third party, no third party is going to make a dent against the two major parties unless they have more than three million dollars to spend. Three million is the amount of money Johnson had to spend on this presidential election. Heck, that congressional candidate Ossoff vying for the 6th congressional district just spent 8 million on his bide to win a house seat. All that got him was a runoff. The fact is with corporations, Wall Street Firms, lobbyist, special interests, mega, huge money donors giving the two major parties millions, tens of millions of dollars, no third party no matter what they believe is going anywhere.
Most Americans didn't have the faintest idea who Johnson was, no name recognition, no money, no media, no debate, no political ads, no nothing. How can any third party candidate, the three million Johnson spent was the most money any third party candidate spent. But that is three million up against 1.4 billion Hillary Clinton spent, 957.6 million Trump spent. Johnson was outspent 2.357 billion to three million.
https://www.washingtonpost.com/graphics/politics/2016-election/campaign-finance/
Whether it is the Libertarians, the Green Party, Castle's Constitutional Party, my Reform Party, none of them are going anywhere or will be able to challenge the two major parties significantly unless they can raise an abundance of money. Third parties don't have the millions upon million reaped upon them by corporations, Wall Street, Lobbyists, Special Interests etc. They get zero dollars from them.
No one knows if the Libertarian message would catch on or not. No one has ever heard it.