本文研究了臺灣的泛藍、泛綠和大陸中國的媒體針對2008年臺灣立委選舉的社論、報導或評論。美國的媒體被用作參照。研究發現在對臺灣立委選舉的報導上，無論何種原因，美國的媒體相較而言比較專業，其次是《聯合報》系、大陸的《人民網》，以及《自由時報》報系。後面三種報紙有專業的潜能，但是其有機角色異常明顯，專業角色和批判角色都很弱。本文對媒體專業主義的研究和新聞工作者角色的分類都很有啓發。本研究採用實證、闡釋、批判的方法。

This paper examines the pan-Blue and the pan-Green media oganizations from Taiwan, as well as some from mainland China. A number of U.S. news organizations are also included in our analysis as a reference point. The paper focuses on the editorials and commentaries regarding the 2008 legislative elections in Taiwan. The findings indicate that the U.S. news organizations tend to be more professional, followed by the pan-Blue’s Lianhe Bao, China’s People’s Daily Network, and the Ziyou Shibao group. Although the latter three can be professional, they are more likely to be organic, and their critical role is also quite weak. The study has used the positivist, interpretive and critical approaches to social sciences when studying these media organizations. And it has important implications for further research on professionalism as well as the role of journalists.