Notice how they can use innuendo and name-calling to powerful effect. This is a very potent tactic, and one why, despite catastrophic Democrat policies, half the country (including those that hate those policies) will never vote Republican.
We have to stop underestimating Joe. He may not have the charisma Bill Clinton had or perhaps he was not as smooth as Barack Obama. But Joe is a street fighter. He knows how to throw out insults and make them stick. And mobilize his base and get them to vote for him. The closest politican is probably LBJ. The main difference was that LBJ was probably smarter and he was more of a capable legislator compared to Joe.