Are people conservative (liberal) because they are Republicans(Democrats)? Or is it the reverse: people are Republicans(Democrats) because they are conservatives (liberals)? Though muchhas been said about this long-standing question, it is difficult totest because the concepts are nearly impossible to disentangle inmodern America. Ideology and partisanship are highly correlated,only growing more so over time. However, the election of PresidentTrump presents a unique opportunity to disentangle party attachmentfrom ideological commitment. Using a research design that employsactual “conservative” and “liberal” policy statements from PresidentTrump, we find that low-knowledge respondents, strong Republicans,Trump-approving respondents, and self-described conservatives arethe most likely to behave like party loyalists by accepting theTrump cue—in either a liberal or conservative direction. Theseresults suggest that there are a large number of party loyalists inthe United States, that their claims to being a self-definedconservative are suspect, and that group loyalty is the strongermotivator of opinion than are any ideological principles.