It is little appreciated just how much power and influence are wielded by a successful Liberal prime minister, success being measured entirely by electoral victory. Whereas a Labor prime minister has a caucus, factions, the ACTU, a not always co-operative national executive and a sometimes fractious national conference to exert countervailing influence, a conservative leader is remarkably unfettered. The party, and indeed the government, becomes an extension of him, a mere appendage.