The electoral reform in Chile has been approved. As is to be expected in such processes, the final version is a bit different than what had been proposed back in 2013 when we first discussed the Chilean electoral reform.
The size of the Chamber of Deputies will be increased from 120 to 155, and the chamber will be redistricted to have 28 districts (currently there are 60). This means a mean magnitude of 5.5; the range will be 3-8. This is a very substantial change from the current system, in which all districts elect just two.
The Senate is also being increased in size from 38 elected members to 50. The fifteen regions will constitute electoral districts, leading to an average district magnitude of 3.3 (range of 2-5).
The D’Hondt method is retained, as are the open lists.
There will be a gender quota concerning nominations: neither men nor women can constitute more than 60% of the candidates on a list.
The first link above offers detail (in Spanish) about the debates and votes on specific provision, as well as which communes will be in which chamber district, and the district magnitudes for both chambers.