OH EARLY VOTE: In 2008, Kerry/Obama counties cast 985,384 early, Bush/McCain 567,803. In 2012, 945,009 in K/O counties, 649,499 in B/M.
Of course, that won’t erase Obama’s 2008 margin of 200K+, but it’s a good start. The rest is down to Election Day turnout, as well as for whom all those early voters voted.
Here’s the spreadsheet with all the numbers.