A wedge has been driven into American politics by powerful political, social, and economic incentives that are very difficult to overcome. The middle ground has fallen out of the political process, leaving power in the hands of hard-line partisans that frame the national agenda and direct our political energy towards emotionally satisfying--but politically unproductive--tribal warfare. In Wedged, authors Erik Fogg and Nathaniel Greene take readers through a compelling, thorough, and accessible explanation of how Americans--from voters to politicians to media--participate in the process that...