Most of the Argentines in the USA have at the very least green cards, but mainly dual citizenship.
So, sure, a few of them may actually vote in Argentine elections.
But the conservative ones I have met are largely voting up there, not down here.
the internet says while florida has the largest percentage, at about 55,000 people, there are large argentine populations in NYC, LA, Texas and New Jersey.
I dont think you can really count on them all being Milei supporters, but all up, its maybe 300,000 people, and how many of those would voter?
I have met Argentines, in the USA, who are there because they fled the dictatorship. A fair amount of them, often college professors, or other well educated professionals.
Seems like they would be the anti-Milei voting bloc.
I think the sound bites are mostly in Miami, and mostly pretty conservative, well off, expat Argentines. Not necessarily a majority, but, even then, probalby not enough to swing the election.
The numbers I can see for neighboring countries are much lower- 20,000 to 30,000 in Uruguay, Brazil, Paraguay and Chile.
There were around 26 million votes in the election Milei won, so I cant see how, if every single US Argentine voted for him, it would be a significant enough quantity to swing an election. He won by about 3 million votes last time. 10% of that, assuming every single US Argentine is a gorilla, would probably not be enough.