The voting has begun for Presidential poll in South Korea. The early election is being held after a corruption scandal brought down President Park Geun-hye. Left-leaning Moon Jae-in is the clear front-runner with centrist Ahn Cheol-soo his nearest challenger. <br/><br/>The election is being closely watched at a time of heightened tensions with North Korea. Mr Moon wants to increase contact with the North – in contrast to Ms Park who cut almost all ties to Pyongyang. <br/>On the final day of the campaigning, Mr Moon called for an overwhelming victory to heal a national divide caused by the downfall and impeachment of conservative Ms Park.