So, you think that means moderats don't walk away?
In the last virginia Delegate election, we had one republican who retired, and one who had a primary challenger. When conservatives won the primary for the retired seat, the retired republican endorsed the democrat. When a conservative beat the incumbent republican, HE endorsed the democrat and made campaign appearances for him.
I've seen conservatives stay home. I've not seen them actively campaign for the democrat when they didn't like the republican. I hope never to see that from any republican.
You cited one example. Only ONE!
Come back when you get something better.