^^^ Demographically, a blow to the Republicans like that would potentially put them on the back-foot for a long time to come. A lot of Trump supporters are not natural Republicans, but without them, it's unlikely the Republicans would have done as well as they did.
That is to say, I don't think Ted Cruz or Paul Ryan would be electable in the same way Trump was.
^^^ Demographically, a blow to the Republicans like that would potentially put them on the back-foot for a long time to come. A lot of Trump supporters are not natural Republicans, but without them, it's unlikely the Republicans would have done as well as they did.
That is to say, I don't think Ted Cruz or Paul Ryan would be electable in the same way Trump was.