At constituency level, seats were divided between open lists using the largest remainder method with the Imperiali quota. Remaining votes and seats were transferred at national level, where special closed lists of national leaders received the last seats using the Hare quota.
In constituencies, seats were distributed through open lists using the largest remainder method with the Imperiali quota. Any leftover votes and seats were then moved to a national level, where a final allocation was made for the remaining seats via closed lists of national leaders using the Hare quota.