Every election, there are a dozen or so third parties who get a candidate on the ballot in one or more states. Very few get any electoral votes and very few get on the ballot in all of the states. There are undoubtedly other third parties that do not get enough signatures or raise the money needed to get on any state's ballot. I do not think anyone has made a serious effort count them all. There are also independent candidates for Congress who essentially have their own party.
third parties
Yes, that is correct. Third parties in the US political system are often referred to as minor parties because they are smaller and have less influence compared to the two major parties, the Democrats and Republicans.
third parties
question doesn't make sense. Third parties? (plural?)
Minor parties, or third parties as they are usually called, are candidate based parties like the George Wallace's American Independence party. They are usually organized around an ideology.
barriers
We don't really have any viable third parties.
We don't really have any viable third parties.
NOT AT ALL, Since 1860, the Republican Party has been one of the two major US parties.
In the US there are an abundance of minority political parties. Often times they are referred to as third parties. Some are exactly called minority parties. In some cases they are called fringe parties.
Some third-party goals eventually become planks in the platforms of the major parties
a third party