The Fifth Legislative Council of Hong Kong is the former meeting of the legislative branch of the Hong Kong Special Administrative Region Government. The membership of the LegCo is based on the 2012 election. The term of the session is from 1 October 2012 to 30 September 2016, during the term in office of the Chief Executive Leung Chun-ying. Due to the new arrangements agreed in a contentious LegCo vote in 2010, the session consists of the new total of 70 seats in LegCo, ten more than previously, with 35 members elected in geographical constituencies through direct elections, and 35 members in functional constituencies, in which five District Council (Second) functional constituency seats each represent all 18 District Councils of Hong Kong voted for by all resident voters in Hong Kong (who did not have a vote in any other functional constituency). The Democratic Alliance for the Betterment and Progress of Hong Kong remained the largest party while the pan-democrats secured the one-third crucial minority. Notable new members of the LegCo members include Gary Fan from the new established party Neo Democrats and first openly gay councillor, People Power's Ray Chan Chi-chuen.

On 18 June 2015, right before the vote, pro-Beijing legislator Jeffrey Lam Kin-fung led a walk-out of members of the Democratic Alliance for the Betterment and Progress of Hong Kong (DAB), the Business and Professionals Alliance for Hong Kong (BPA), most members of the Hong Kong Federation of Trade Unions (FTU) and other pro-Beijing legislators, leaving five Liberal Party legislators, Chan Yuen-han of the FTU and two other pro-Beijing independents remained in the chamber. The government's reform proposal failed as 8 legislators voted in favour and 28 votes against. All 27 pan democrats who had vowed to vote down the reform did so, as did one pro-Beijing legislator Leung Ka-lau representing the Medical constituency. Lam explained that the walk-out was an impromptu attempt to delay the division after the chairman denied his request for a 15-minute recess so that his party member Lau Wong-fat, who was delayed, could cast his vote in favour of the Beijing-backed reforms. However, enough legislators remained in the chamber that quorum was met and the proposal was voted down while most of the pro-Beijing legislators were outside. Nine pro-Beijing legislators, including five Liberal Party members, stayed behind out of confusion, and only eight of them voted in favour of the package, giving the rest of the world the false impression there was no support for the blueprint.

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