As the campaign for next Wednesday's South Korean presidential election enters its final stage, the feud between Ms. Park Geun Hye of the ruling New Frontier Party and Mr. Moon Jae In of the opposition Democratic Unity Party is heating up.

The most important election issues should be how to lend stability to people's lives by rectifying the rich-poor economic gap and how to deal with North Korea, which launched a long-range rocket and placed a satellite into orbit on Wednesday.

Ms. Park is the daughter of the late Park Chung Hee, who led an authoritarian regime backed by the military and laid the foundations for South Korea's economic development as president from 1963 until his assassination in October 1979. Mr. Moon, a civic activist turned lawyer, served as chief secretary to the late Roh Moo Hyun, who served as president from 2003 to 2008.