PRINCETON, NJ -- Republicans are significantly more likely than Democrats or independents to rate their mental health as excellent, according to data from the last four November Gallup Health and Healthcare polls. Fifty-eight percent of Republicans report having excellent mental health, compared to 43% of independents and 38% of Democrats. This relationship between party identification and reports of excellent mental health persists even within categories of income, age, gender, church attendance, and education. The basic data -- based on an aggregated sample of more than 4,000 interviews conducted since 2004 -- are straightforward. The differences are quite significant, as can be seen. While Democrats are slightly less likely to report excellent mental health than are independents, the big distinctions in these data are the differences between Republicans and everyone else. One could be quick to assume that these differences are based on the underlying demographic and socioeconomic patterns related to party identification in America today. A recent Gallup report (see "Strong Relationship Between Income and Mental Health" in Related Items) reviewed these mental health data more generally, and found that men, those with higher incomes, those with higher education levels, and whites are more likely than others to report excellent mental health. Some of these patterns describe characteristics of Republicans, of course. But an analysis of the relationship between party identification and self-reported excellent mental health within various categories of age, gender, church attendance, income, education, and other variables shows that the basic pattern persists regardless of these characteristics. In other words, party identification appears to have an independent effect on mental health even when each of these is controlled for.

The accompanying graphs display the relationship between party identification and self-reported mental health crossed by categories of a number of relevant variables. In almost all cases, Republicans are more likely to report excellent mental health across the various categories. For example, Republicans are significantly more likely to report excellent mental health than are independents or Democrats among those making less than $50,000 a year, and among those making at least $50,000 a year. Republicans are also more likely than independents and Democrats to report excellent mental health within all four categories of educational attainment.