This chapter revisits the 2005 Macao Special Administrative Region（MSAR）Legislative Assembly elections and discusses mass participation in the political system after the elections. The 2005 direct election of Legislative Assembly had the most number of electorates casting their ballots and the most number of candidate lists running in the history of Macao legislature election. However，electoral irregularities came with fierce competition in that election. It implicates that the Macao authorities have to introduce tough measures and policies suppressing vote-buying in elections. After 2005 elections，Macao residents began frequently to mobilize and to organize protests and demonstrations pressuring on the MSAR government for their livelihood interests. Responding to public demands and pressures，the MSAR government is aiming to extending channels for public input in policy process. It is noteworthy that tension between government and the public tends to be obvious in Macao’s changing economic circumstances. Protests and demonstrations become the means and tools by the mass participating in the political system and aiming at improving government performance.