But who is Leni Robredo - and what are her chances of winning ... She has said it was her volunteers who chose the colour, which is also a symbol of activism. The BBC's Howard Johnson in Manila ...

Leni Robredo, an outspoken critic of Philippine President Rodrigo Duterte's war on drugs, has accepted his offer to lead the controversial campaign. Ms Robredo, the vice-president and Mr Duterte's ...