Democracy

Democracy is a form of government by in which all participants have equal vote on decisions that affect the group. Democracy does not appear to have a prominent place in Transformers society, as the vast majority of their leaders and policy appear to be decided on either by past leaders, the will of the Matrix, or a High Council. (It is unknown whether any High Council is elected into office, and most known members seem to serve for millions of years, until assassination.) This seeming Martial Law is possibly due to the perpetual wartime that exists on Cybertron.

Marvel Comics continuity

 * Optimus Prime explains to Jetfire the terms of his leadership of the Autobots. He states that if the Autobots wish him to step down, he will.  It is also their right to leave individually.  Though Optimus Prime was appointed to Autobot Commander by Emirate Xaaron, he suggests that it is the will of the people that keeps him there.  Whether this is only Optimus Prime's feelings or an actual, enforced policy is never discussed.

Beast Wars animated series

 * When Optimus Primal goes missing, a secret ballot is cast among the four remaining Maximals. The vote results in a tie, and Dinobot laughs at the process's revealed faults.  Presumably, Predacons do not believe in democracy.  Optimus Primal was able to contact them soon after, and he declared Rattrap the leader in his absence.