Most Americans support liberal policies on the social welfare agenda, the dominant policy cleavage in American politics. Yet a striking feature of the US party system is its tendency to equilibrium. How, then, does the Republican Party minimize defection on the social welfare agenda? The results of this study illustrate a deep ideological asymmetry between the parties. Republican identifiers are ideologically aware and oriented to a degree that far exceeds their Democratic counterparts. Our investigation, which utilizes cross-sectional, longitudinal and experimental data, demonstrates the role of ideological awareness and involvement in the Republicans' ability to maintain the backing of their supporters even on issues on which the position of the Democratic Party is widely popular. It also exposes two mechanisms, party branding and the use of the status quo as a focal point, that Democrats use to retain or rally support for issues on the social welfare agenda on which the Republican Party's position is widely popular.
THE IDEOLOGICAL ASYMMETRY OF THE AMERICAN PARTY SYSTEMFor a half-century or more, the positions of the Democratic Party on the dominant electoral agenda in American politics have been far more popular than those of the Republican Party. How, we ask, has the Republican Party induced its supporters to continue to oppose policies that are not only widely popular in the electorate as a whole, but from which many of them would benefit?The answer to this question, our results indicate, calls attention to a neglected feature of the contemporary US party system: the ideological asymmetry between the two parties. Republican identifiers, we show, are ideologically aware and oriented to a degree that far exceeds their Democratic counterparts. Their identification with the ideological outlook of their partyindeed, their appreciation of their party as a proponent of an ideological outlook -helps fortify their opposition even to widely popular social welfare policies.The objective of this twofold study is threefold. The first is to test the hypothesis of partisan asymmetry in ideological awareness and orientation. The second objective is to explicitly evaluate counter-hypotheses. The most compelling counter-hypothesis, in our judgment, is self-interest. Republican supporters, it may reasonably be argued, oppose increases in government spending for social welfare programs not because of ideological conservatism, but out of a concern that the spending increases will come from their pockets in higher taxes. The third objective follows from results confirming that Republicans are strikingly more likely than Democrats to be ideologically aware and engaged. How, then, does the Democratic