In a general meeting in September 1999, the To-led Young Turks also proposed to put the minimum wage legislation on the 2000 LegCo election platform of the party.

The Mainstreamers which included the "triumvirate", Yeung Sum, Cheung Man-kwong and Lee Wing-tat, saw the minimum wage debate was a challenge to the party authority and decide to fight back by joining hands with the Meeting Point faction to defeat the Young Turks.

Andrew To wrote a newspaper article accusing the Mainstreamers of suppressing intra-party dissent, "just like the butchers in the Tiananmen massacre.

In 2006, he co-founded the League of Social Democrats (LSD) with other activists including legislators Albert Chan and Leung Kwok-hung and radio host Wong Yuk-man with a "clearcut" pro-grassroots stance and opposition party image.

His wife, Jackie Hung, was a leader of Civil Human Rights Front[6] and Justice and Peace Commission of the Hong Kong Catholic Diocese.