We estimate effects of early voting on voter turnout using a 2010 homogenization law from Ohio that forced some counties to expand and others to contract early voting. Using voter registration data, we compare individuals who live within the same 2x2 mile squareblock but in different counties. We find substantial positive impacts of early voting on turnout equal to 0.22 percentage points of additional turnout per additional early voting day. We also find greater impacts on women, Democrats, independents, and those of child-bearing and working age. We simulate impacts of national early day laws on recent election outcomes.

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早期投票法、选民投票率和党派投票构成：来自俄亥俄州的证据

我们使用俄亥俄州 2010 年的同质化法估计提前投票对选民投票率的影响，该法律迫使一些县扩大而其他县则收缩提前投票。使用选民登记数据，我们比较了居住在同一 2x2 英里平方街区内但位于不同县的个人。我们发现提前投票对投票率的实质性积极影响相当于每增加一个提前投票日增加 0.22 个百分点的投票率。我们还发现对女性、民主党人、独立人士以及育龄和工作年龄的人的影响更大。我们模拟了国家早期法律对最近选举结果的影响。