Bershidsky: Feel left out? Blame the two-party system

A common complaint of both Democrats and Republicans is that they feel underrepresented or unrepresented in Washington. Some of them assume that’s because politicians are co-opted once they take office. Others feel left out because simply because they backed candidates who didn’t win.

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VIDEO: Why presidential candidates need South Carolina

Every four years, presidential candidates descend upon South Carolina in hopes of securing the state’s favor. For the right, winning the Palmetto state is almost a sure indicator of the party’s nomination. For the left, it signals the support of a critical group: black voters. (Video by Brittany Peterson / McClatchy)