They post the numbers by party affiliation. So that is registered D's and registered R's. We don't know how they voted. Suppose a bunch of registered D's vote R this time? My MiL is one of those. She has voted D her whole life sad to say but this time she's voting for Trump.
Current number from Florida that includes mail-in ballots and early voting...D’s have a lead of 239k right now, so dropping by about 50k\day on Monday and Tuesday. This is just a count of how many R’s and D’s have voted. There’s also 1.4 million Independents that have voted thus far. D’s always have a lead going into Election Day. Clinton had a 96k lead in 2016 and lost by about 120k.
SpeedyInTexas posts a Florida update every day that will keep you up to date.
Bottom line is that Florida is trending well when you compare it to past elections.