Tories don't like proportional representation

If we assume that the political left (in the form of the Labour party) are generally in favour of expanding the reach of democracy then it is only the party of the centre-right who would oppose pr. Even though Labour might do badly under pr we can still reasonably expect them to support it since it is in line with their principles. However, to broaden the reach of democracy is not necessarily in line with the principles of the Tory party who are historically associated with the monarchy and the church. Only Tories (not Labour) oppose pr because they are associated with the old established hierarchies. Labour do not oppose pr and anyone who does is a Tory in all but name.