Democrats Face a Grim Future -National Journal

[Landslide Lyndon]

Oh look, it's the Kraushaar guy who thought "Clinton Cash" was the gospel and would doom Hillary's campaign.

[Landslide Lyndon]

As I mentioned elsewhere, the Republican bench was similarly decimated in the 80's after two landslide midterm losses (1982, 1986).
That didn't prevent them from dominating the next decade and becoming the agenda-setting party.
If a state/district starts leaning towards a certain partisan side, then its voters will vote even a nobody as long as he has the right letter next to his name.