"Early returns indicated an 80 percent majority in favor of repealing the existing hydrocarbons law pushed in the 1990s by the hated Gonzalo Sánchez de Lozada (or "Goni"), whose political consultants were the star liberal Democratic pollster Stanley Greenberg and former presidential campaign manager James Carville. The Washington-based Greenberg firm represents British Petroleum, one of the multinationals with billions invested in Bolivia. BP supported the referendum, along with the International Monetary Fund (IMF) and the World Bank, as did US Embassy officials, because the possible alternative--an Indian-led revolution--was even worse." Tom Hayden, in The Nation, 21 July 2004
Also, from the same article,
"The Greenberg firm, along with Carville, has done extensive polling of Latin American opinion and consulting for Eduardo Duhalde, whose popular support as Argentina's president fell to 8 percent after repression of antiglobalization protests in the 1990s, as well as Francisco Labatista, the candidate of Mexico's Institutional Revolutionary Party, which sent armed forces to quell the 1995 Zapatista uprising before being defeated at the polls."