However, because conventions are not written down, their existence and practice are open to debate. Real or alleged violation of convention has often led to political controversy. One extreme case was the Australian constitutional crisis of 1975, in which the operation of conventions was seriously tested. The ensuing constitutional crisis was resolved dramatically when the Governor-General Sir John Kerr dismissed the Labor Prime Minister Gough Whitlam, appointing Malcolm Fraser as caretaker Prime Minister pending the 1975 general election. A number of conventions were said to be broken during this episode. These include: