The Democratic party continued to criticize the Sangkum and Sihanouk in their newspaper, much to Sihanouk's consternation. In August 1957 Sihanouk finally lost patience, calling out Democrat leaders for a debate. Five of them attended. At the debate, held at the royal palace, Sihanouk spoke in a belligerent tone, challenging the Democrat leaders to present evidence of malfeasance in his government and inviting them to join the Sangkum. The Democrat leaders gave hesitant responses, and, according to American historian David P. Chandler, this gave the audience the impression that they were disloyal to the monarchy. The debate led to the effective demise of the Democratic party, as its leaders were subsequently beaten up by government soldiers, with Sihanouk's tacit approval. With the Democrats vanquished, Sihanouk focused on preparing for general elections, slated to be held in March 1958. He drafted left-wing politicians, including Hou Yuon, Hu Nim and Chau Seng, to stand as Sangkum candidates, with a view to winning left-wing support from the Pracheachon. The Pracheachon on their part fielded five candidates for the elections. However, four of them withdrew, as they were prevented by the national police from holding any election rallies. When voting took place, the Sangkum won all seats in the national assembly.