Argentina's PASO primaries, formally the Open, Simultaneous and Mandatory Primaries, were created to democratize the internal structures of the country's political parties. More than a decade after the system took effect, it shows deep asymmetries between its stated objectives and the way it actually works. The report frames the shortcomings as fiscal inefficiency, democratic fatigue and the incentives the mechanism creates for party innovation. A tool meant to open up party life has, in practice, produced cost burdens and weary voters while pushing organizations to adapt. The distance between what the primaries promise and what they deliver now sits at the heart of the assessment.