I don’t know how much of it was really a joke. A lot of people, especially in the Midwest, seemed to really just not like Clinton… they saw both of them as political devils and people were pissed the DNC got in Bernie’s way. It was kind of the perfect storm in swing states.
Biden doesn’t have the “root of all evil, manipulative woman” issue Clinton had, but he really does need to show people that he’s fit and ready for another 4 years and that he’s done great things for this country … because those are the two points the the right are really trying to undermine him with.
Hopefully Trump just doesn’t even get the Republican nomination and someone else is able to shine through in the Republican debate. Trump is basically like “Jeb!” was in 2016, everyone’s just assuming he’s got it by default, but a lot can change, especially in the later debates and as Trump’s legal troubles get worse.