Suan Dusit Poll, conducted during July 9-13 and covering 1,449 respondents, showed that the income policy won the highest approval rating, at 38.14 per cent.
Following are the drug supression policy, 19.49 per cent; the rice-pledging policy, 16.95 per cent; the first-car buyer scheme, 15.25 per cent; and the high-speed train project, 10.17 per cent.