Many people think Gen Prayut Chan-o-cha should announce to the public that he will stay on as a prime minister until the eight-year limit on his premiership expires, which is this month, according to an opinion survey by the National Institute of Development Administration, or Nida Poll. The poll on the eight-year limit on Gen Prayut’s premiership and the political future of the three ‘Por’ generals was conducted from August 2 to 4 on 1,312 people aged 18 and above of various levels of education, occupations and incomes nationwide. The three ‘Por’ generals refer to Gen Prayut, Deputy Prime Min…