This study examines the performance of Pakatan Rakyat (PR) component political parties (i.e. PKR, PAS and DAP) in the 2011 Sarawak state elections. The 2011 Sarawak state elections was held in April 2011 and it was a tense battle between the ruling BN and the new comer opposition Pakatan Rakyat. The study is based on the assumption that there is a linkage between PR’s campaign strategies and election manifesto and the voters’ preference. Therefore, the study investigates the linkage between campaign strategies and manifesto of Pakatan Rakyat and its performance in the 2011 Sarawak State elections. It uses Martin Harrop and William L. Miller’s theory of competitive elections as a framework for analysis. This study uses qualitative method of research for analysis of data. The data were collected from the primary sources such as formal and informal interviews, party manifestos, newspapers, documents from the Election Commission (EC) and secondary sources such as books and scholarly articles. The study argues that the opposition for the first time collectively campaigned as a single opposition coalition under the name of Pakatan Rakyat. PR’s campaign strategies were quite sound and practical as it divided its campaign strategies into traditional and non-traditional campaign strategies. Besides that PR proposed several strategies which can be labeled as a new type of approach. The study found that even though PR did not get the two-thirds majority in the State Legislative Assembly, it succeeded to capture more seats; pointing to the fact that there is a shift of support from the incumbent BN government towards the opposition PR. However, the study also found that the main factor contributing to PR’s inability to capture more seats was its inability to reach an understanding with the local opposition political party: Sarawak National Party (SNAP). The study therefore, among others, recommends that PR should work out a strategy to integrate some important local political parties such as SNAP if it wants to control Sarawak state legislative assembly.