Not-an-American, but what I heard was that BOTH DNC and RNC do not choose the more "popular" candidate. The parties choose the candidate that their "donors" actually want. In RNC I think they straight-up just rig the process and push their choice.

But in the case of the DNC I believe the DNC "promises" to choose the candidate that is the most popular. BUT DNC "donors" have what is known as "super-delegates" or some bullshit ( Extra Votes for Money ? ) Soooooo Hillary went around ALL the states "buying" up all the super-delegate votes........ so in-effect Bernie lost even before the voting had even started! And on top of all that I think that so many candidates ran at the same time that it split most of Bernies votes down the middle which might have been the strategy engineered by DWS and the DNC.

Those are not the only problems with the DNC..... I believe that Hillary and DWS and DNC ran political ads PROMOTING Drumpf because he would be "easier" for Hillary to beat. So effectively the DNC and Hillary were campaigning for Drumpf! !!!!

I think 'Murica has a lot more serious problems and a lot more roadblocks but breaking the fundamentals of democracy by rigging votes and installing puppets seems almost comical and farcical if it wasnt so damaging and dangerous.