Of the total of 40 directly elected senators, 25 were elected by the Dutch electoral college and 15 by the French electoral college. These numbers were in the Belgian Constitution and roughly reflect the ratio of Dutch-speakers to French-speakers by population. The directly elected senators were always elected on the same day as the members of the Chamber of Representatives, for a term of 4 years, except if the Chambers were dissolved earlier. The last federal election that had directly elected senators took place on Sunday June 13, 2010.