Colombo, April 5, 2010, SPA -- Sri Lanka's opposition today vowed to deny the ruling coalition a two-thirds majority at this week's parliamentary election, saying it would give an already powerful president too free a hand to rule, according to Reuters. President Mahinda Rajapaksa, fresh from a landslide re-election in January, has said he expects his United Peoples Freedom Alliance (UPFA) to get two-thirds of the 225-seat legislature at Thursday's polls. That would give him the votes to change the constitution to his liking, a situation which produced the 1978 charter under former President J.R. Jayawardene that many view as flawed in terms of social equality and distribution of powers. Rajapaksa's alliance looks assured of victory, riding high on momentum from his win in January, his defeat of the Tamil Tiger separatists in May last year and an economy resurgent since the end of the 25-year civil war. On Monday, the central bank forecast 2010 economic growth of 6.5 percent, rebounding sharply from an eight-year low of 3.5 percent in 2009. Rajapaksa says economic revival is central to his plans for reconciling a country divided by ethnic strife and inequity. Rajapaksa, like Jayawardene, has not said which changes he plans to enact, but the opposition warned he would show more of the autocratic streak they say he has displayed since he first came to power in 2005. "It's not healthy for the country and will be a deadly attack on democracy to have the executive powers and two-thirds in parliament with one party. They will abuse the extensive powers," said Vijitha Herath, secretary for the Democratic National Alliance (DNA). The DNA, the second largest opposition group, is led by the Marxist Janatha Vimukthi Peramuna (JVP) party. It includes retired General Sarath Fonseka, who lost his presidential bid against Rajapaksa in January and is now in jail. --SPA 20:59 LOCAL TIME 17:59 GMT www.spa.gov.sa/766408