He is more likely to favour contact with North Korea rather than the severing of relations undertaken by the previous president of South Korea.
His predecessor Park Geun-hye, for example, closed an industrial complex just inside North Korea where South Korean firms employed workers from the North. A president Moon might re-open it.
Professor John Delury of the Graduate School of International Studies at Yonsei University in Seoul told the BBC: "We know pretty clearly what the presumed front-runner, Moon Jae-in, would do.
"He's supported by people who think the South has to go up there to Pyongyang and actively work on improving inter-Korean relations. If it's Moon who wins this election, South Korea really becomes a new player and could be much more forcefully a part of whatever problem or solution we see on North Korea."...