Recent changes in partisan support suggest the beginning of a new group basis for the party coalitions. For the Republicans, the changes define group support more sharply than has been the case for many years—a combination of southern whites and a strong religious base of Catholics, regular church-goers, and Protestant fundamentalists. For Democrats, the changes are defined in terms of losses—of Catholic, union household, and regular church-going voters—not sufficiently offset by the increased support of women and the growing Hispanic population. The problem for Republicans is to maintain and enhance a heterogeneous coalition, including a fragile religious combination. The problem for Democrats is to find new coalition partners or regain support that the party has lost.