In Brown, the neighborhood network was up and running and made a good showing for a special election, but got blindsided by the Dem Get out the Vote effort.
We can see this as a fluke, or a reason for concern.
And as we know, when it comes down to it, national elections are actually turning on a very few districts in all reality. So a concentration tactic can win the day, especially if they made a combination of fighting the Major fronts and singling out just a few "safe" seats for blind side attacks.
In a world of limited resources which we do live in, if Dems shift money to fight "safe seats" we should have incremental pick ups in the toss ups as the Dems divert funds from toss up seats.