Senate

…Chamber of Deputies and the Senate. All members of the Chamber of Deputies (the lower house) are popularly elected via a system of proportional representation, which serves to benefit minor parties. Most members of the Senate (the higher chamber) are elected in the same manner, but the Senate also includes…

…Chamber of Deputies and the Senate were elected by a combination of proportionality and plurality. Seventy-five percent of the seats in these two chambers were filled from single-member districts by individual candidates who won the largest number of votes in each district. The other 25 percent of the seats were…