United Kingdom
http://www.rogerdarlington.me.uk/Britishpoliticalsystem.html
Russia
http://www.rogerdarlington.me.uk/Russianpoliticalsystem.html
China
http://www.rogerdarlington.me.uk/Chinesepoliticalsystem
Mexico
http://www.rogerdarlington.me.uk/Mexicanpoliticalsystem