Poll check: Electoral Affairs Commission Chairman Justice Woo Kwok-hing visits Mong Kok Community Hall polling station.

Thirty-nine polling stations will open from 7.30am to 10.30pm May 1 for about 47,000 voters in nine contested subsectors to cast their vote in the Election Committee subsector by-elections.

Forty candidates are running for 15 seats. After the polls close, all ballot papers will be delivered to the central counting station at the International Trade & Exhibition Centre in Kowloon Bay. There will be a designated area for people to observe the count.

Details of the by-elections are available here. Hourly voter turnouts and the election results will also be posted.

Electoral Affairs Commission Chairman Justice Woo Kwok-hing visited Mong Kok Community Hall today to see its conversion into a polling station. He urged voters to check their poll cards to see which station to visit. Voters who do not have the card in hand or who have enquiries can call the election hotline 2891 1001.

Four subsectors - Textiles & Garment, Architectural, Surveying & Planning, Chinese Medicine & Higher Education - each have one vacancy. Another four subsectors - Accountancy, Engineering, Legal, Agriculture & Fisheries - each have two vacancies. The Hong Kong & Kowloon District Councils subsector has three vacancies.

There will be no polls in seven other subsectors as 12 candidates have been elected unopposed to fill the 12 vacancies. These are Finance, Import & Export, Industrial (First), Industrial (Second), Labour, Chinese People's Political Consultative Conference and Heung Yee Kuk.