SEOUL—Growing up in Kim Jong Il’s North Korea, Ji Seong-ho experienced no exposure to democracy. His first flavor arrived in 2007 when he noticed a presidential candidate give a speech at a regional marketplace, a calendar year right after the double-amputee escaped to South Korea working with do-it-yourself crutches.

“Everyone has a single vote, which raises the benefit of a human becoming in this article,” stated Mr. Ji in an interview at his modest downtown Seoul office. “If I come to be a lawmaker, I’d envision that I’d be producing a page in the history publications.”