Polls opened Sunday for the first Thai election since a 2014 coup, with a high turnout expected among a public who received a cryptic last-minute warning from the Thai king to support "good" leaders to prevent "chaos."All television stations repeated the rare statement by King Maha Vajiralongkorn moments before polls opened across the politically turbulent country.Sunday's election pits a royalist junta and its allies against the election-winning machine of billionair