In Europe, it is not uncommon for there to be political parties in neighboring countries that in some sense are the same, and that, e.g., form blocs in the European Parliament. At one time, in some number of countries, there was a Communist party, sometimes with a different name. Some European countries have somewhat similar Green parties.
What about in the United States? There have been third parties that were more or less deliberate copies or at least resembled parties seen in Europe. On the other hand, there are parties in the United States that Europeans find difficult to understand. For links to a vast number of American third parties, see the inimitable Politics1.com.
For starters, the United States has on and off had Socialist parties and a Communist Party.
The relatively new (founded 2011) American Solidarity Party represents an effort to launch an American Christian democratic Party, where here ‘Christian’ means primarily Roman Catholic. Indeed, their wikipedia central page lists a series of important documents, all of whose titles are in Latin. They name came from the Polish Solidarity movement of forty years ago. They support government intervention in the economy, are socially conservative, and appear to line up respectably well with their German counterpart, the CDU.
The Green Party in the US arose as a split from The Greens/Green Party USA, which has now disbanded, and became the Association of State Green Parties. The cause of the split is unclear. The Green Party now has ca. 25,000 members, making it about 60% larger than the national Libertarian Party in membership, but has perhaps a third as many registered voters.
At one time, there was an American Falangist Party that copied parts of the policies of the Spanish Falange. It dissolved. At another time, there was an American Phalangist Party inspired by the Lebanese party of approximately the same name. It seems to have disappeared.
Finally, fifty years ago, your author went with a group into Boston’s Chinatown for Friday dinner. I distinctly recall a storefront, always dark in the evening, on which a political party was identified. It was the Kuomintang Party, the party of Chiang Kai-shek, but whether it was a club for students and expatriates or an effort to launch a new American party I have no idea.


“Socratic Gadfly at his blog when detailing the internal discord from inside the Green Party in 2020 when Howie Hawkins became nominee shared some of it.”
There have been different bouts of discord within the GP. The ASGP/GPUSA split was many years before 2020.
“For starters, the United States has on and off had Socialist parties and a Communist Party.”
Continuously since at least the 1860s, although they have not always qualified for ballots and there have been different ones.
“The Green Party in the US arose as a split from The Greens/Green Party USA, which has now disbanded, and became the Association of State Green Parties. The cause of the split is unclear. ”
It’s not unclear. You can read about it at politics1.com listing and description of parties (see archive.org if you no longer can), wikipedia, web searches etc.
“The Green Party now has ca. 25,000 members, making it about 60% larger than the national Libertarian Party in membership, but has perhaps a third as many registered voters.”
This is probably an apples to oranges comparison. The national libertarian party has over 150,000 members as defined by having signed the membership pledge and not having revoked it. The 15-20k fluctuating membership of the national LP refers to people who donate at least $25 per year and/or have previously paid for a lifetime membership to the LNC. How is the 25,000 GP membership defined? I strongly suspect it is something more akin to the 150,000+ number, not the 15-20k number of libertarian party members. That is, I highly doubt the Greens have that many ongoing or past large financial donors, especially if the donation amount is comparable.
The Libertarian Party also has foreign equivalents and an international association, which is or used to be linked on their website. The libertarianism of some of those parties is very dubious, however.
“The Green Party in the US arose as a split from The Greens/Green Party USA, which has now disbanded, and became the Association of State Green Parties. The cause of the split is unclear. ”
Socratic Gadfly at his blog when detailing the internal discord from inside the Green Party in 2020 when Howie Hawkins became nominee shared some of it.
One thing stupid about the European blocs is they really only exist as transactional entities. So the EU Parliamentary elections get held and once the election is over, you have perhaps 20 state-level parties that switch which group they belong to. It’s one reason why the spitzencandidaten movement was doomed to fail, you don’t have cohesive blocs known to exist before the election that you know will carry on after the election