Ronny Tong
After the resignation of Ronny Tong, the seats commanded by the pan-democrats and pro-Beijing camp in the geographical constituencies became 17-17. If the pro-Beijing camp had gained the majority of the seats, the pan-democrats feared that they would have modified the rules of procedure, which require a majority in both geographical and functional constituencies, in order to block filibustering, which had been used by pan-democrats as a tool against legislative bills by the Leung Chun-ying administration that they saw as unreasonable.