I've written before about presidential approval in Chile, and UDI Senator Pablo Longueira is also trying to figure it out. He criticizes the way in which Sebastián Piñera has handled his image.
“Porque la forma en que trabaja el gobierno es en torno a una figura personal, individual, no ha habido ningún cambio por hacer algo más institucional que finalmente haga que esto tenga una estabilidad en el tiempo”, indicó Longueira.
The problem with this argument is that there is an increasingly strong incentive for presidents not to identify with institutions, by which he means party coalitions. The two main coalitions in Chile are extremely unpopular, whereas presidents have achieved high levels of personal approval even in times of economic downturn. Piñera has every incentive to 1) emphasize his individual achievements; and 2) blame institutions for any failures.