COLUMBUS, Ohio (AP) — The Supreme Court on Tuesday cleared the way for voters in the battleground state of Ohio to cast ballots on the three days before Election Day, giving Democrats andPresident Barack Obama’s campaign a victory three weeks before the election.

The court refused a request by the state’s Republican elections chief and attorney general to get involved in a battle over early voting.

Ohio is among 34 states, plus the District of Columbia, where people can vote early without giving any reason. About 30 percent of the swing state’s total vote — or roughly 1.7 million ballots — came in before Election Day in 2008. Crucial to Obama’s win that year was early voting in Ohio, North Carolina and Florida.

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