Trump will have his pick. He can offend “suburban women” or be accused of racism. Because no way in hell can a white male get the Democrat nomination in 2020.
The only way to secure the support of “suburban women” anyway is to heartily endorse baby killing.
The political logic of a large but weak Democratic primary field is that the last candidate standing wins the nomination. In 2020, that just might be Joe Biden, determined to stay in and with enough long-time political friends allies to never run out of money or reliable campaign staff.