My take is a bit different. I see it as a diverse coalition banded together for perceived benefits (often quite real benefits). There are clear tensions, some quite acute right now as we can witness, but there are a lot of bright people and a lot of very wealthy people working hard to keep the thing together. They've really made incredible progress in influencing American politics since the 60s. As Perlstein details, we on the left didn't get it.
Dialog is pretty much useless. They've now gone fully post modern and their truths are commonly held axiomatically and are not available for questioning. That's a bit of a generalization but take the "post mortem" some strategists attempted after the last election - it has gone absolutely nowhere except as a series of pointers regarding what they ought to pretend. The smarter crowd (or perhaps we might describe them as the less absolutist or more traditional conservatives) have created a movement which is now, in many ways, no longer under their control. They purposefully set to making people stupider, achieved that end, but didn't foresee some consequences.
Elections are the point of hope. Thus, of course, they're in the process of doing what they can to minimize Dem voters getting to the polls. They aren't fans of citizen democracy.