The pro-democracy camp has begun its campaign to garner at least 100 of the 800 seats on the Election Committee that will choose the next chief executive, the Democratic Party chairman said. Lee Wing-tat said they were drawing up a list of liaison people in each of the 38 sub-sectors. 'We want to be well prepared,' Mr Lee said. 'We have to find those contact people to give them a signal that we have to kick-start our preparation. 'It's hard work to find at least 10 people in each sub-sector.' Mr Lee said he had contacts in at least 10 sub-sectors and the Article 45 Concern Group had at least two. An Election Committee sub-sector poll will be held at the end of this year. The committee will in turn select Hong Kong's chief executive next year. The Democratic Party boycotted the Election Committee poll four years ago, saying it was a 'small-circle election' but has decided this time to play the game. 'We changed our policy. If we are to participate, we need to do our preparation,' Mr Lee said. 'It's useless if we don't even have 100 nominations.' He failed to obtain the 100 nominations required to challenge Donald Tsang Yam-kuen last year. Mr Lee said the 25 pro-democracy lawmakers would campaign in areas frequented by professionals to remind them to register as committee election voters.