Personalist regimes tend to be violently overthrown while single party states tend to nonviolently collapse from within. This paper analyzes Libya under Qaddafi as a personalist regime, and USSR under Gorbachev as a single party state, and seeks to ascertain through case studies and process tracing the reasons for the violent overthrow of personalist regimes compared to the peaceful collapse of single party regimes. Both regime types create the problems that result in their downfall, and both kinds of downfall are accelerated by the public appearance of weakness.