It was a case of third time not lucky for the ruling Palang Pracharath Party (PPRP), and its frontman Prime Minister Gen Prayut Chan-o-cha. The setback suffered by the PPRP in the by-election on Sunday for Bangkok’s Constituency 9 covering Laksi and parts of Chatuchak district was its third defeat in a row. The ruling party, led by Deputy Prime Minister Gen Prawit Wongsuwon, lost two by-elections in the southern provinces of Chumphon and Songkhla to its coalition partner the Democrat Party earlier last month. The latest defeat seems to have hurt the PPRP the most, however. Not only was the rul…