Biden would be an easy beat.. Just keep trotting out the videos of his interview when he bragged about witholding aid to Ukraine unless they stopped investigating his son.
Bloomberg has problems, but he is the strongest so far. Michelle Obama as a candidate for Pres, would be tough. But she has not indicated a desire so far this primary.
Bootygig is too much of a nut job. Steyr has no name recognition. Sander is too commie for moderates. Warren has been caught in too many lies. And well Klobichar, nobody can pronounce the name.