“…However, merely because adding one additional dimension does not capture a great deal of the heterogeneity of Americans' issue preferences does not mean that additional dimensions do not exist; it merely means that there is not any one particularly large secondary influence common across all Americans . This logic can be seen by considering a placebo test: a factor analysis of Census‐tract‐level correlates of socioeconomic status such as race, income, education rates, and marriage rates produces one large dimension because all these variables correlate moderately; but, this does not mean that race and marital status are “actually the same thing.” Similarly, there may be hundreds of “dimensions” to Americans' policy preferences—some might favor universal health care because of a personal experience with an insurance provider, for example, and others may oppose gay marriage due to their religious convictions (Tesler ). Simply because there is no single particular factor that competes in strength with the first dimension does not mean that such factors collectively matter little and that “views on gay marriage” and “views on abortion” are “actually the same thing.” As Figure makes clear, there are many issues on which Americans have persistent views yet they do not have strong relationships with other policy domains.…”