People who question those who question the "informed-ness" of the population of immigrants from MERCOSUR countries may not actually know anyone from this group. I'm not saying have met and talked to - I mean know. Know them and their backgrounds, where they came from and what they're doing here. You don't begin to get a feeling for the absolute lack of understanding in most of them until you talk to them in depth, get an understanding of how they actually think, what's important to them and what they know - and why they know it.
Now, that's my direct, personal experience. Others' may vary
I'm going by what I've seen and not hearsay or the desire that I really have to want everyone to be equal. From birth I truly believe we are all equal, within variances of capabilities, but it's what our parents and societies do to us as children that create inequalities that really matter.
I know there are many immigrants from MERCORSUR countries who don't follow the depth of ignorance that I'm talking about. However, their societies are full of many thoughts about the wonderful benefits of a government run to take care of the people (even though they've never experienced it - they're searching for El Dorado). The well-educated in those countries who come here will have a bent toward the kind of politics here due to the way they grew up, maybe, but more will probably be freer thinkers. Shop keepers who have run businesses and had a basic education - maybe split.
But I think most of the people who immigrate to Argentina from other countries in the region are the poor and ignorant of their respective countries, looking for the city paved with gold. I've been to really poor places in Paraguay where people think almost literally of Buenos Aires like that. They think that someone comes here, finds a job immediately and starts becoming rich, because the paltry $50 USD value of what they send home a month is a lot of money back there and the people back there see the results, not what it took to get it.
But many times, once they come here, they don't want to go back. I know people who have lived in the villa near me for 5 years, came from Paraguay, and don't want to go back. Even living there is better than life in Paraguay for the really poor, in some eyes. Why would they want to screw up what they see is a good thing? They don't see very far in the future and are not thinking about climbing the corporate ladder and retiring. Hell, they'll have kids who will take care of their retirement.
I don't want to get into a discussion, personally, about who should vote and who shouldn't - as far as citizens go. One thing I don't mind saying, I don't believe that people who are ineligible for military, going to jail, or even to drink, are necessarily ready to vote. As far as permanent residents go - I can understand the sentiment, but permanent residents don't have a stake in the country. Particularly as to how relatively easy it is to get citizenship here. If they want to vote, they should put their roots down.
Hell, I have permanent residency, but I have no business voting here. I am thinking seriously about leaving Argentina. What sense does it make for me to be deciding anything about this country? It's obvious I haven't made my mind up to be a citizen - I haven't done what's needed to become one (and don't intend to).
It's the same thing with those uncounted millions who are immigrants from the region and are permanent residents (or even here without a regularized status). If you want to have a say in the running of the country, become a citizen.
Meanwhile, this is a play for the Kirchneristas to get a stronghold on the voting in this country, a coup de grace for the shaky democracy that currently exists.