The Miami Herald reports that Democrats lead Republicans by 167,000 in Florida early voting: 

More than 4.5 million Florida votes are already in before Election Day and Democrats used the last full official day of in-person early voting to extend their lead over Republican ballots cast by 167,000, according to this morning's figures.

But in 2008, Obama led by about 280,000 in early voting. (It's also not the final number -- thousands of absentee ballots and absentee-in-person ballots are not yet tallied.) 

Florida Gov. Rick Scott (R) significantly curtailed early voting in the state after taking office in 2011. He cut the maximum number of early voting days from 14 to eight and eliminated early voting on the Sunday before Election Day. Early voting is down from 2008, while absentee voting is up. Democrats are better at turning voters out early, while Republicans do better with absentee voters and on Election Day.