Political parties in Indonesia have evolved from time to time, including santri-based political parties. The management board changes, constituent demands, and the impact of power relation are the factors that influence the political parties' changes. The aim of this study is to analyze the relationship between values and power in the santri-based parties, in relation with the consistency of the parties and the politicians in a struggle for supporting ideology practices. The methods of this study are literature review and participant observation by using content analysis, discourse analysis and self-reflective. The findings indicate that the santri-based parties face a dilemma and burden in practicing Islamic values when they had been elected for house representative or executive position. As a result, the elected politicians often act pragmatically beyond the platform of the party. This study classifies the santri-based parties into two groups: out-of-the-law party and disorientation party. The former means that the party neglecting and not comply with the principles, values, and norm that stated in the party constitution in obtaining power. PKB, PAN and PKS are examples. While the latter means the party actions and program has developed beyond the party goals and constitution. PPP is an example. The major cause is the internal vulnerable condition the party encountering that triggered by conflict in gaining mass basis support. Furthermore, the Islamic parties also experience external competition with nationalist religious party in gaining votes. However, even though the Islamic parties have internal and external challenges, santri-based parties remain acknowledged as a significant political force. This is because the Islamic party has significant and real social support from Muslim voters and strong bargaining power in the political arena in Indonesia.