Members of ethnic minority groups are among those most likely to be dissatisfied with authoritarian political regimes. They are often excluded from political power and may face discrimination or unwelcome pressures to assimilate; legacies of discrimination and unequal development may have resulted in their geographic concentration in economically disadvantaged areas. However, assessing the political preferences of members of these groups is difficult. Substantial inter- and intra-ethnic variation in political preferences makes it hard to gather – or even conceptualize – a representative sample. Moreover, preference falsification is particularly likely among members of minority groups, since concerns about repression may make them particularly unwilling to reveal negative sentiment about the government. In this paper, I use original survey data from Russia to assess public opinion and preference falsification among minority populations, finding evidence of substantial inter-ethnic variation in different metrics of regime support.