Better yet, a multiparty democracy. People have pointed out how hard it would be for Kerensky's provisional government to succeed, but that low probability event is probably Russia's best chance. Imo.This.
Simply put, they don't have enough legitimacy with the populace to ever do anything.
Tens of millions could still die from the Whites trying to purge their society of the elements that caused the Civil War, or trying to futiely get the populace to see them as legitimate again. So really, those tens of millions could still die, just from a different brutality.
What Russia needed were the Mensheviks, not the Whites or the Bolsheviks.