Statistical summary

Majoritarian System and Unitary: 54/62 = 87%
Majoritarian System and Federal: 8/62 = 12.9%
Proportional System and Unitary: 65/72 = 91%
Proportional System and Federal: 7/72 = 8%
Mixed System and Unitary: 37/43 = 86%
Mixed System and Federal: 6/43 = 14%
Majoritarian and Nomination System and Unitary: 9/12 = 75%
Majoritarian and Nomination System and Federal: 3/12 = 25%
Proportional and Nomination System and Unitary: 1/1 = 100%
Proportional and Nomination System and Federal: 0/1 = 0%
Nomination System and Unitary: 1/1 = 100%
Nomination System and Federal: 0/1 = 0%
No Lower House and Unitary: 3/3 = 100%
No Lower House and Federal: 0/3 = 0%