Ideological Polarization of American Politics and the Presidential Elections of the Obama Era

本研究讨论了美国总统选举，特别关注初选过程，以及它如何在增加美国政治的意识形态两极分化中发挥重要作用。除了选举影响的负面影响，如两极分化，本研究还考察了当前的竞选活动如何促进了更广泛的政治参与，这与20世纪70年代之后基于媒体的竞选活动不同。在传统的地面游戏方法（如拉票）的背景下，使用尖端在线技术的出现是一种新的、更有效的说服策略。

This study discusses the American Presidential election, with a specific focus on the primary process and how it plays a significant role in increasing the ideological polarization of the U.S. politics. Aside from downside of the election's influence, such as polarization, this study also examines how the current campaigns have also contributed to a broader political participation, unlike the media based campaigns after the 1970s. The advent of using cutting-edge online technologies in the context of traditional ground game approaches, such as canvassing, was a new and more effective strategy for persuasion.