Social networks are supposed to help candidates win over wavering voters and persuade supporters to get out and vote, and today's election will help clarify whether that strategy works, experts say. We might also have a clearer sense of social media outreach's true value to political campaigns, and of whether there's an upper limit on social media marketing's ability to deliver votes. "What is the point of saturation? ... Google and Facebook don't have answers to that. They just know they want the candidates' money," says Vincent Harris, digital campaign manager for several Republican candidates.
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