Four, Democratic candidates don’t seem ready to take on Trump. While Sens. Bernie Sanders and Elizabeth Warren have taken extreme policy positions that will be a liability in a general election, Biden has been showing signs of his advanced age. This was apparent in the January Democratic debate, which will be remembered for Warren and Sanders stabbing each other. Former Obama green jobs adviser Van Jones lamented on CNN after the debate: “I want to say that tonight for me was dispiriting. Democrats have to do better than what we saw tonight. There was nothing I saw tonight that would be able to take Donald Trump out.”

Though Biden, on the surface, would have a good chance of beating Trump, recent presidential elections have shown that the candidate with the ability to generate more enthusiasm among their base fares better than a candidate chosen by default. Just think of the failed candidacies of John Kerry, John McCain, Mitt Romney, and Hillary Clinton. In contrast, Trump enjoys a passionate following and the GOP is more unified around him than when he won the first time around.