In the early 1970s, Wayne Cornelius asked, “Are the migrant masses revolutionary? Definitely not, at least in Latin America and many other parts of the developing world.” These words summarized an emerging revisionist view of the political character of Latin America's new urban poor. Careful empirical research had proved wrong previous scholars and observers who had expected the new migrant populations in Latin America's cities to become sources of support for revolutionary political movements. A new picture of the inhabitants of Latin America's burgeoning shantytowns came into focus, showing these populations to be either passive or loyally engaged in the surrounding political system. According to this picture, squatters held considerable hope for individual advancement, forged clientelistic ties with government officials, and showed few signs of joining radicalized, class-conscious social movements.

We analyze vote buying in Argentina—the payment by political parties of minor benefits (food, clothing, cash) to citizens in exchange for their votes. How widespread is vote buying in Argentina, and what is the profile of the typical vote “seller”? Did the shift toward a neoliberal economic model in the 1990s increase or reduce vote buying? Why do parties attempt to buy votes when the ballot is secret and people could simply accept campaign handouts and then vote as they wish? We analyze responses to surveys we conducted in Argentina in 2002 and offer answers to these questions. Our findings suggest that vote buying is an effective strategy for mobilizing electoral support among low-income people when parties are able to monitor voters' actions, make reasonably accurate inferences about how individuals voted, and credibly threaten to punish voters who defect from the implicit clientelist bargain. Our results point toward ballot reform as one way to reduce vote buying in Argentina.

To what extent has the Argentine party system been polarized along class lines? The political historiography gives mixed and contradictory answers to this question. We explore the social bases of Argentina's political parties using an original database, the most comprehensive database of Argentine elections yet assembled, and new methods of ecological inference that yield more reliable results than previous analyses. We identify two distinct party systems, one in place between 1912 and 1940, the other emerging after 1946. The first party system was not consistently class based, but the second was, with the Radical Party representing the middle classes and the Peronists, workers and the poor. Still, there were important exceptions. Lower-class support for the Peronists, as proxied by literacy rates, declined during Perón's exile, which implies that the party had trouble mobilizing lower-class illiterate voters. Since the return to democracy in 1983, class polarization has again found some expression in the party system.

When a party or candidate loses the popular vote but still wins the election, do voters view the winner as legitimate? This scenario, known as an electoral inversion, describes the winners of two of the last six presidential elections in the United States. We report results from two experiments testing the effect of inversions on democratic legitimacy in the US context. Our results indicate that inversions significantly decrease the perceived legitimacy of winning candidates. Strikingly, this effect does not vary with the margin by which the winner loses the popular vote, nor by whether the candidate benefiting from the inversion is a co-partisan. The effect is driven by Democrats, who punish inversions regardless of candidate partisanship; few effects are observed among Republicans. These results suggest that the experience of inversions increases sensitivity to such outcomes among supporters of the losing party.