I examine the relationship between demographics and vote choice using pre-election tracking polls, exit polls, and data on the American states. A number of important findings emerge: (1) there was a fair amount of preference stability in 2016; (2) Clinton underperformed Obama in 83% of demographic groups examined; (3) at the state level, the percent of whites with low levels of education and the size of the rural population had important effects on vote choice, and both of those variables were more strongly correlated with Democratic vote share in 2016 than in 2012; and (4) while state turnout rates were moderately correlated with Clinton’s vote share, changes in state turnout rates from 2012 to 2016 did not have a substantial impact on Clinton’s performance.