Don’t forget tho that most, possibly close to all, of those 4 million Conservaltive voters didn’t go to the polls because the effort to turn them out (a big voter-targeting software system named “Orca”) crashed on election day, without any real backup.
There were good stories on that, as well as the Dem’s targeting/turnout systems (Narwal/Catalist) on both Breitbart and PJMedia a last year. I’ll see if I can find them. They were really fascinating insights into how voters are targeted on almost industrial level.
Also, the GOP used a brand spanking new system to drive GOP turnout this year. I read somewhere that it was credited (among other things) with McConnell’s surprise 15-point victory over Grimes in KY and Ed Gillespie’s near miss against Warner in VA.
There's no "almost" about it. This was laser-guided-bomb GOTV going on.