President Thein Sein under pressure as Burma's ruling party contemplates bleak future Around 250,000 of them work in the seafood factories of Mahachai, a major fishing port southwest of Bangkok. Home to one of the largest concentrations of the estimated two million Burmese migrant workers in Thailand, Mahachai was a key stop for Ms Suu Kyi when she left Burma in May of this year for her first foreign trip since 1988. "So many people came to hear her speak that they were lining the rooftops and hanging from the trees in the street," said Thar Htoo, a 22-year-old factory worker from the port of Dawei. Everyone wants change and no one thinks the USDP can deliver that. I don't know a single person in Mahachai who'll vote for Thein Sein or the USDP at the next election. With a long land border with Burma which is easy to cross, Thailand is the favourite destination for the growing army of Burmese migrant workers. Many earn only a minimum wage of £6 a day. That, though, is still five times or more what they would make at home. And with millions of their relatives in Burma relying on the money they remit to survive, the migrant workers are now an important constituency. None The Daily Telegraph spoke to have any confidence that the USDP will be able to kick-start the economy after years of mismanaging it when they were still the military junta, or end the corruption endemic to the country. Thein Sein and the USDP cannot change the present situation, but maybe Aung San Suu Kyi and the NLD can. I'm not sure the USDP really want things to change. Thein Sein may do, but there are many people in the USDP opposed to him," said Myint Aung, a 52-year-old from Mandalay who runs a library for migrant workers in Mahachai. With Ms Suu Kyi being treated as a president-in-waiting by Washington, President Sein's position looks increasingly untenable. Some USDP MP's are already hinting at the need for a new president. "We now know what people want and what they don't," said USDP MP Win Than on Monday. If we don't change, we shall lag behind. Many political analysts were surprised when Mr Sein was picked to become president over Shwe Mann, who was a more senior general in the old regime. The rivalry between the two men has intensified in recent weeks as they hold separate press conferences, while in September they were on opposite sides of a battle to impeach senior judges over projected changes to the constitution.