I commonly hear the left is a loose coalition of factions (which can split apart), while the right fall in line. I think there are fewer factions on the right, or the factions are not as far apart, so coming together is easier. They also unite in absolute hatred of the left, so will fall in line to slay that beast.
100% agreed regarding coalitions, unfortunately centrists dont seem to know they are in a coalition, or that the party even has a platform. They are so spooked by trump that they will do or say anything to win. Anything.
Centrists on this thread today accuse Progressives of being members of the far right as a ploy to hide the fact that they are the ones pushing far right policies themselves. The centrists are much closer to being republicans anymore than they are to adhering to the traditional democratic party platform. Real Democrats wouldnt risk the drinking water of the whole continent to enable more fracking to big oil company donations. They wouldnt be ok with more school shootings to pander to the NRA donations (especially when the NRA is heavily infiltrated by Russia). And they wouldnt sponsor and enable a far rightwing genocidal war in the middle east – pitting us against the entire rest of the world-- to draw foreign lobbying donations. But American progressives are somehow willing to swallow every bit of that traitorous behavior except one to get over the finish line together, whereas centrists are willing to change not a single damn thing to win, and proceed to whine and threaten.