That’s because Lifton included two other essential elements in his description of destructive cults, and for my money, they both apply to Democrats much more so than to Republicans. Those elements are “a process of coercive persuasion or thought reform [commonly called ‘brainwashing’]” and “economic, sexual, and other exploitation of group members by the leader and the ruling coterie.”
Can you think of any instance where President Trump has coerced his supporters into following some element of his platform? Rather, if you are being honest, it is the Trump troops who have had to coerce their leader into adopting the conservative positions he holds today. On everything from abortion to immigration to judges to gun control, it is the base that has demanded Trump earn their support by doing what they want (not what he or Ivanka or Jared might want).
Now consider the monolithic thinking promoted by the left. Is there any room for dissent or discussion within the Democratic Party about the value of preserving life within the womb? Not if you believe what Elizabeth Warren said in the last Democratic debate: “I believe that abortion rights are human rights. I believe that they are also economic rights. And protecting the right of a woman to be able to make decisions about her own body is fundamentally what we do and what we stand for as a Democratic Party.”