Humanitarianism, Egalitarianism, and Public Support for Political Compromise.

Democratic policymaking requires compromise, but public support for it varies substantially. Scholars know relatively little about the psychology of such public attitudes. In this investigation, we consider the predictive capacities of humanitarianism (a commitment to helping those who are suffering) and egalitarianism (a commitment to treating people equally). Such altruistic values, we argue, foster concern for the common good and a cooperative vision of democratic policymaking — which, in turn, engender support for compromise. Moreover, we suggest that partisan differences in such values (with Democrats being more likely than Republicans to prioritize them, on average), help explain Democrats' disproportionate support for compromise. Data from two nationally representative studies are consistent with this theoretical perspective, offering novel insights into the roots of political compromise, the reach of core values as political determinants, and the dynamics of partisan asymmetry. [ABSTRACT FROM AUTHOR]