Oh, yeah, the PLP was absolutely out of it. How a party even manages to become so far estranged from its members in the first place is baffling. I mean, the UK is probably more susceptible to it because of the more autonomous and centralized party apparatus, but even so, the PLP is barking. Democrats are definitely more in touch with their members, if not perfectly so.
I would posit that it's partially due to a lack of real regional power in the UK (councils being very limited in some ways after all). The Democrat party is able to be moderate enough to win Presidential Elections whilst state Democrats in very liberal states can be more left-wing and govern in a way that satisfies their more liberal supporters. In the UK on the other hand, the fact that local government is kind of ignored a lot of the time means the PLP has to try and balance moderation, which is seen as crucial for General Elections, with enough liberalism to appease its supporters.