Typically, if I remember right, the vote rolls in from Cleveland first, then kind of works its way down the state. In 2004, Hamilton was one of the later counties to come in, and that was red.
Claims Increase Of Machines Switching Votes In Ohio, Other Battlegrounds
http://www.freerepublic.com/focus/f-news/2954009/posts
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RNC pushes 6 states to fix machines that give Romney votes to Obama
http://www.freerepublic.com/focus/f-news/2953854/posts