Butler, David (1963) The Electoral System in Britain Since 1918. Oxford: Clarendon Press.
2.
Johnston, Ron J., Charles J. Pattie, Donny F. L. Dorling and David J. Rossiter (2001) From Votes to Seats: the Operation of the UK Electoral System since 1945. Manchester : Manchester University Press.
3.
Lees-Marshment, Jennifer (2001) Political Marketing and British Political Parties: the Party's Just Begun. Manchester: Manchester University Press.
4.
Rawlings, H.F. (1988) Law and the Electoral Process. London: Sweet and Maxwell.
5.
Rossiter, David J., Ron J. Johnston and Charles J. Pattie (1999) The Boundary Commissions: Redrawing the UK's Map of Parliamentary Constituencies. Manchester: Manchester University Press.
6.
Schumpeter, Joseph A. (1943) Capitalism, Socialism and Democracy. London: George Allen and Unwin.