It is like the Representative or Senator who gets permission from leadership to vote opposite of their party in order to retain the seat.
While I agree with OP's anger, the reality is that this is Maryland and thanks to the electoral college our presidential votes do not count anyway. If this "feel good" gesture helps keep Hogan popular among a few libtard voters I am OK with it. Remember what happened to Erhlich, which ultimately led to butthole O'Malley and SB281.
True... "Plausible Deniability."