1. In 1964 Malaysia held its first elections. The Tunku had an understanding with the Chief Minister of Singapore, Mr Lee Kwan Yew that the PAP (People Action Party) would contest only in Singapore and would stay out of the rest of Malaysia. It was really not a smart kind of agreement. It was not put on paper at all. Only an understanding between two leaders.
2. It was not surprising that the PAP decided to contest in the peninsular. Lee had expected the Malaysian Chinese who had been represented in the Government only by the MCA could be persuaded to support him. If he defeated the MCA then the Tunku would replace the MCA with the PAP in the Alliance.
3. The PAP is a Chinese party largely. But it had always projected itself as non-racial. To win in Malaysia he had to appeal to Chinese chauvinism. However he could not do this openly.