Here is a thread to speculate wildly about Joe Biden's cabinet.
Common rumors so far include:
State: Susan Rice
Defense: Michelle Flournoy
Justice: Doug Jones or Sally Yates
Treasury: Jared Bernstein
There is also a rumored NO SENATORS rule, so nothing incredibly stupid like putting Sherrod Brown in the cabinet should happen. Also means no Warren to Treasury or Sanders to Labor, but both of those would have been bad ideas anyway as they are more valuable in the Senate.
Herbert Hoover got 40% of the vote in 1932. Friendly reminder.