I don't believe democrat don't have a credible candidate,it depends on the speech of each of the nominies and the third speech to try to convince the electorate,that matters
Trump rating is reducing and the American public are not happy with him especially the way he talks to women I. Public and his international relationship with some countries is not that smooth
The former us vice President during the Obama administration is a good candidate , because during Obama era,he was outstanding and also he played a key role during his administration
Good and speech that tried to convince your electorate is the main antidote,to convince people and the laudable programs you can put in place for the electorate