For those of you really into their Argentina politics:
It comes from this sharp and insightful Spanish language article on the state of play in Argentina politics by Ernesto Calvo y Andrés Malamud, which also explains the methodology behind the chart creation (it’s weird, but strangely it seems to work). If LatAm politics is your thing, it’s well worth your time.
Thanks due to @HealeyParera for pointing it out and to @colincdocherty for the continued debating.