Their liberal views act as a 'counterweight' to/against the governor's conservatism.
The crane has a heavy 'counterweight' on the back.
(..) Why can't you stop? You! Outta the way! Out of the way!!! What have you done ?! What have you done ?! We need a counterweight. Get the Blood Bag toward the back. Burn them! Burn them! Hey there! Say bye bye to the neck! We're going in Slit! (..)2015 Mad Max: Fury Road