Parliamentary system
| Parliamentary System |
|---|
| Antigua and Barbuda |
| Australia |
| Bahamas |
| Barbados |
| Belize |
| Bhutan |
| Canada |
| China |
| Cuba |
| Dominica |
| Ethiopia |
| Grenada |
| Jamaica |
| Kiribati |
| Laos |
| Lebanon |
| Malaysia |
| Marshall Islands |
| Mauritius |
| Nauru |
| Pakistan |
| Papua New Guinea |
| United Kingdom |
| St. Lucia |
| Solomon Islands |
| Samoa |
| Trinidad and Tobago |
| Tuvalu |
| Vietnam |
| 1 to 40 (30) |