Singapore Prime Minister Lee Kuan Yew led his ruling party to its eighth straight election victory, winning 80 seats in the recently enlarged 81-member Parliament. There had been no doubt that the People’s Action Party would win. When counting was completed early today, the party had won 69 of the 70 seats contested to combine with 11 seats in which its candidates were unopposed. Lee’s party won 64.6% of the final vote, compared to 64.8% in the last election in 1984. Lee, 64, has been prime minister since 1959--when Singapore, a former British colony, became self-governing. Although he was reelected easily in his constituency, Lee is expected to step down in the coming months and be succeeded by Goh Chok Tong, first deputy prime minister.