A controversy arose during the 2016 Legislative Council election in Hong Kong as the Electoral Affairs Commission (EAC) banned six potential localist candidates from running for the Legislative Council of Hong Kong (LegCo). The EAC carried out a new election measure to require all candidates to sign an additional "confirmation form" in the nomination to declare their understanding of Hong Kong being an inalienable part of China as stipulated in Article 1, Article 12 and Article 159(4) of the Basic Law of Hong Kong.
Localist Hong Kong Indigenous's Edward Leung and pan-democrat League of Social Democrats (LSD) Avery Ng sought a judicial review but the court refused to immediately hear the judicial reviews. Leung subsequently signed the confirmation form but was asked by returning officers whether they would still advocate independence along with some other localist candidates including Civic Passion's Alvin Cheng and Hong Kong National Party's Chan Ho-tin.
After the end of the nomination period, nominations of six localist candidates, Hong Kong National Party's Chan Ho-tin, Democratic Progressive Party's Yeung Ke-cheong, Nationalist Hong Kong's Nakade Hitsujiko, Conservative Party's Alice Lai Yee-man, Hong Kong Indigenous's Edward Leung and independent Chan Kwok-keung, were "invalidated"; Edward Leung's nomination was rejected by EAC returning officer Cora Ho Lai-sheung on the basis that she did not trust Leung had "genuinely changed his previous stance for independence."