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Research conducted by the Associated Press found there have been at least 31 statewide recounts since 2000, only three of which changed the outcome of an election. Among those 31 recounts, the largest shift in results was 0.1%, in Vermont’s 2006 auditor race. With a razor-thin margin and ongoing vote count, here’s a look at how hotly contested states in this year’s presidential election consider and conduct recounts.