Well, early voting from that Old North site show Democrats holding longer than in 2012.
Also, while the Democrats and Unaffiliateds are ahead of their 2012 numbers, Republicans are lagging behind.
According to this graph the GOP took the lead 51 days before Election Day last cycle.
While this is good news, my worry is that a lot of White conservative Democrats that haven't voted in ages have been reengaged by Trump and that passion is partially at work here. Or maybe this is all just a sign of Clinton's superior ground game.