The 2018 losses were statistically predictable.
The President is not being arrogant. He's working hard for 2020 just as he did in 2016.
The Dems have no real condidate and are running solely on :Name Recognition". Endgame....Biden and Warren for VP. She's not stupid.
If Hillary had taken VP under Obama, she might have been his 3rd term. (I'm sure she was offered VP)
Obama remembered the fate of John Kennedy, a President whose life was abruptly shortened and followed by an immensely corrupt and ruthless Vice President. A lot of dead men around LBJ, even more dead men around the Clintons. Biden helped Obama with the white Catholic demographic, and counted himself lucky to be in the game. Obviously, no VP Hillary.