It takes a rare candidate to make Trump look like the sharper, more well put together option. Now, I voted for Pete back in the NH primary, a politician not only with enough charisma to take on Trump, but also the clarity and vigor to highlight Trump's obvious physical and mental decline over the past few years, but no, Democrats had to go for two septuagenarians even older than Trump instead, turning his weakness into a strength. Even if Bernie were to pull off a upset and win the nomination, Trump would then shift focus to "stamina" and physical health. I don't believe that the White House is being honest about Trump's supposedly perfect health, but there's nothing on the record officially contradicting it, and Bernie has had a heart attack recently.