This paper examines the response of Indonesia’s parties in dealing with the parliamentary threshold in the 2019 election. It has a twofold objective: to discern the development of political ideology in Indonesia’s post-New Order regime and to identify the current political cleavage among political parties particularly between Islam and secular parties or major and small parties. Methodologically, it is a qualitative research by applying the in-depth interview and online news collection as data-gathering technique. The research finding demonstrates that the political ideology in recent Indonesia is waning towards the end of ideology. This can harm the party system in Indonesia, thereby degenerating to a so-called “depoliticization of party” because of the lack of people trust. Evidence about this abound. First, the parties’ responses to the parliamentary threshold issue are no longer considering ideological and organizational motives, but pragmatic goals. Second, several Islamist parties are in one coalition with secular parties in term of responding to the parliamentary threshold. Likewise, small parties have the same position as major parties in coping with such an issue. It indicates that the ideological contestation is waning and submerging.