The electoral law Italy used from 1993 until 2005. It was named after Sergio Mattarella, a center-left lawmaker who drafted a proposal after Italians overwhelmingly supported a referendum abrogating Italy's postwar proportional representation system (now Mattarella is the President of the Italian Republic) . While citizens clearly signaled they wanted a voting system that would lead to stable and accountable governments that would alternate with the public mood, the Mattarellum law appeared to introduce a first-past-the-post system for 75% of lawmakers, but coyly introduced a reserve system for runners-up that reduced the effective majoritarian nature of the law to 50%. Still, the law did produce legislatures that lasted longer than previously, and for a while forced political parties to field candidates popular in the districts they ran in, as opposed to distributing safe seats at will. It was replaced in 2006 by a law dubbed the Porcellum which introduced separate criteria for the upper and lower legislative chambers, a cynical move that delivered on its design by creating unstable majority coalitions.