Latin America and the Caribbean: Fact Sheet on Leaders and Elections [Updated June 1, 2007] [open pdf - 56KB]
"This fact sheet tracks the current heads of government in Central and South America, Mexico, and the Caribbean, and provides the dates of the last and next election for head of government. It also provides the national independence date for each country."
CRS Report for Congress, 98-684
United States. Department of State, Foreign Press Centers, Bureau of Public Affairs: http://www.fpc.state.gov/