Public opinion research often identifies evangelical Christians based on a double-barreled, yes-or-no, question asking respondents whether they are an evangelical or born-again Christian. This paper uses a survey experiment to demonstrate the implications of this measurement strategy. Among White Americans, more than one-third of those whom researchers classify as evangelical using the standard double-barreled question actually eschew the evangelical label; the same is true for just under two-thirds of African Americans. Additionally, these born-again non-evangelical Christians hold less conservative political outlooks compared to the self-identified evangelicals with whom they are grouped, and, in fact, oftentimes more closely resemble those who reject both the evangelical and born-again labels. Despite this, the double-barreled identification question produces a White “evangelical or born-again” group that looks politically similar to a composite “evangelical” or “born-again” group based on two questions asking about each identity separately. Finally, important differences appear across race, suggesting that religious and political histories affect how people interpret and respond to double-barreled questions.