Kammala jumla mai zuwa: Lam ya zama Babban Sakatare don Gudanarwa a karkashin gwamnatin Leung Chun-ying a shekarar 2012. Daga 2013 zuwa 2015 Lam ya jagoranci Task Force on Constitutional Development for 2014 Hong Kong electoral reform kuma ya gudanar da tattaunawa tare da dalibai da shugabannin adawa a lokacin zaben.
zanga-zangar da aka yi. A cikin zaɓen Shugaban zartarwa na 2017, Lam ya sami kuri'u 777 daga Kwamitin Zaɓe na mambobi 1,194 a matsayin ɗan takarar da aka fi so a Beijing kuma ya zama mace ta farko Shugaba na Hong Kong.