South Korea election 'very tight'

With the polls closed in South Korea's elections, an exit poll by three of the country's main television stations suggests the ruling Saenuri Party's Park Geun-hye has a slim lead.

Combined figures from the networks released after polls closed give her 50.1% of the vote, in a race where turn-out has been very high and economic and social welfare issues have dominated.

Lucy Williamson reports from Seoul.