The Conservatives’ 124,000 members will choose a leader from a shortlist of two. Who are the selectorate? Research led by Professor Tim Bale at Queen Mary University of London suggests they are mostly male, white and live in the south of England. Many are well off; one in 20 earns more than £100,000 ($127,000) a year. The average member is 57, but 44 per cent are 65 or older.