Here are a couple more candidates whose signs are visible from the subway platform. I like how Choeol-Min Kim is waiving to me and has a big smile; it kind of offsets his receding hairline. He's got the "Energy to Drive Change!"
As for Jong-Hoon Jeon, he's taking Jeong-Goo Shim's approach of clasping his hands together in a show of sincerity. He'll be the "Mayor Who Takes Responsibility for the Economic Situation of the Common People".