For battleground Ohio, the race has just begun. In a crucial decision, the Supreme Court announced Tuesday that it will side with the Democrats in refusing a Republican request to block early voting in the key election state. The Obama campaign and Ohio Democrats sued the state of Ohio over changes in the law that took away three days of voting the weekend before the election. Democrats say more than 100,000 people voted in the three days before the election in 2008. The vital 72-hour early voting window could mean the difference between Obama and Romney, in the state that many believe will determine the next president.