Former prime minister and potential presidential candidate Hwang Kyo-ahn has joined the main opposition Liberty Korea Party.<br />There's growing speculation Hwang may run for the party's leadership next month -- something he will likely make clear during a press conference this morning.<br />On Facebook on Sunday,... Hwang vowed to make every effort to reform and innovate the conservative party,... and promised to put the country and people first.<br />Hwang, who served as acting president when former President Park Geun-hye was suspended from office between late 2016 and May 2017,... is the preferred opposition candidate for the 2022 presidential elections, according to polls.<br />But there are concerns he could taint the party's image given that he played a major role in the Park administration,... while he also faces the task of expanding his support-base beyond the pro-Park faction within the party. <br />