LV models don't really matter anymore now that Democrats have mastered the art of targeted early and absentee voting. The people will vote.
Have they really? Why did they not use that in 2014? Does it work only presidential election?
When did they mastered it? What evidence can you provide?
2008 and 2012? There's a lot of articles on the Obama campaign data and outreach operation that Clinton has now inherited. It's how the Democrats have locked up D+6/7 ID advantages in two straight elections.
For whatever reason, Democrats ran and hid during midterms refusing to attach themselves to the President or using the same kind of electioneering.