Just a comment: saying those red states are “up for grabs” in 2017 is more than a little specious: There is absolutely zero chance a Dimocrat could be elected to the Senate from Texas, for example - I doubt they’ll even manage to find a sacrificial candidate - and I imagine Tennessee and Mississippi are similar.
And I think the odds are good that waffling Liberals like Heidi Heitkamp and several others are at risk of having to find a real job.
How about the blue states being up for grabs?