The party was member of the Alliance for Universal Suffrage which consisted of all the pro-democracy groups to strive for the 2012 universal suffrage of the Chief Executive and Legislative Council. In response to the electoral reform package proposed by the government, the party joined hand with the Civic Party to launch the "Five Constituency Referendum" by having five legislators resigning and participating in a territory-wide by-election to demand genuine universal suffrage. The claim of by-election as referendum expectedly received serve attacks from the Beijing government and the pro-Beijing camp in Hong Kong as unconstitutional. The Democratic Party refused to join the movement and sought for a less confrontational way to negotiate with Beijing. The movement was considered as failure with only 17.7 percent of the registered voters voted despite all three LSD legislators successfully returned to the LegCo. The LSD strongly criticised the Democratic Party for its move to negotiate with Beijing and voted for the reform package and attacked the Democratic Party in the following 2010 July 1 march.