the labor (left) party in australia suffered a historical upset (led *every* poll since 2016 and lost) while running on a campaign extremely similar to the 'progressive' agenda here.

https://www.vox.com/2019/5/18/18630483/australia-federal-election-2019-scott-morrison-coalition-bill-shorten-labor

similar results await us if bernie sanders is the nominee.

american history has been crystal clear about what happens to prez candidates who run too far left of the (majority older white center right) electorate.

even biden (as well as clinton) is running even further left than obama (especially on immigration). that comes with its set of risks in crucial rust belts states and nc, fl, etc.