Centrism
The average is not automatically desirable.
The Rethuglicans are -900. The Democrats are basically clustered around, oh, let's say +50. What we need is actually +75 or +100 (or, to be honest, +900)... but after four years of Pumpkin, the +50 would be a good start.
What Manchin thinks he's going to deliver is -425.
What he's really going to deliver is -900.
This analogy is now officially stressed enough to reinforce concrete.