They're leaving because we Trumpers are making them unelectable and not because of the Larry Hogans' of the party.
They are not unelectable. Most of us would still support them. We will be stuck this year with Thune, Hoeven, overdone Grassley. Then there are the others who toy with us from time to time. Think Rubio, Crapo, Lankford. Will any go the way of Cassidy or Rounds in their backstabbing of Trump? Those 2 are with us for 6 years.