Kant's transcendental deduction of political authority

The concept of political authority is the guiding problematic of Kant's mature political philosophy. The proper foundation of state authority lies, according to him, in the idea of an “original contract” and it is only in terms of this regulative principle that the sovereign nature of the state can even be conceived. By placing this doctrine at the core of his political thought Kant appears to affirm the fundamental tenet of the contractarian tradition: legitimate political authority arises only from the consent of those under such authority.