Midterms, especially primaries, are won and lost by activists.
And right now, if Tuesday night's primary results are any indication, Democrats appear to be in better shape structurally than the GOP. It's still very early in primary season to draw conclusions that are too sweeping, but here are four takeaways based on what's known from Tuesday night's elections in Ohio, Indiana, West Virginia and North Carolina:
1. Republicans dodge a bullet. Are they learning the lesson of Alabama?