My point wasn't that Argentina should have fewer parties - historically, there have been two main ones (PJ and UCR). I think more viable parties would have help

My point wasn't that Argentina should have fewer parties - historically, there have been two main ones (PJ and UCR). I think more viable parties would have helped. But, if you are going to have a two-ish party system, left-right is IMHO a more efficient way to organize it than personalities, culture clash and historical grievances - especially if you then also have left and right as factions within the historical parties. Which is how the US and Argentina organized their parties until very recently, Ireland still does. I think that's a bad system and creates too many opportunities for arbitrage and corruption. Plus, multiparty systems tend to work on a left-right spectrum anyway.