Most people in human history have lived under some kind of nondemocratic rule. Political scientists, on the other hand, have focused most efforts on democracies. The borders demarcating ideal types of democracies from nondemocracies are fuzzy, but beyond finding those borders is another, arguably greater, inferential challenge: understanding politics under authoritarianism. For instance, many prior studies ignored transitions between different authoritarian regimes and saw democratization as the prime threat to dictators. However, recent scholarship has shown this to be an error, as more dictators are replaced by other dictators than by democracy. A burgeoning field of authoritarianism scholarship has made considerable headway in the endeavor to comprehend dictatorial politics over the past two decades. Rather than attempting to summarize this literature in its entirety, three areas of research are worth reviewing, related to change inside of the realm of authoritarian politics. The two more mature sets of research have made critical contributions, the first in isolating different kinds of authoritarian turnover and the second in separating the plethora of authoritarian regimes into more coherent categories using various typologies. How do we understand authoritarian turnover? Authoritarian regimes undergo distinct, dramatic, and observable changes at three separate levels—in leaders, regimes, and authoritarianism itself. Drawing distinctions between these changes improves our understanding of the ultimate fates of dictators and authoritarian regimes. How do we understand the diversity of authoritarian regimes? Scholarship has focused on providing competing accounts of authoritarian types, along with analyses of institutional setup of regimes as well as their organization of military forces. Authoritarian typologies, generally coding regimes by the identities of their leaders and elite allies, show common tendencies, and survival patterns tend to vary across types. The third research area, still developing, goes further into assessing changes inside authoritarian regimes by estimating the degree of personalized power across regimes, the causes and consequences of major policy changes—or reforms—and rhetorical or ideological shifts.