Alan Dershowitz is a Liberal with a mind like a bear trap. You just don’t pick a battle of wits against this guy unless you are very prepared.
And he is a lefty, a traditional one. But he is infected with a malady that makes him unpalatable for many Pols on the Left: He is honorable. He does not speak with a forked tongue just to be in the good graces of people and score political points.
I have no qualms about him not being a friend of the Conservative movement. But at least I know he will come at you from the front.
He will soon disappear because the Left will despise him even more every day: He makes sense.