A supporter of the National Unity of Hope (UNE) party take part in a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, presidential candidate of the National Unity of Hope (UNE) party, speaks during a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

A supporter of the National Unity of Hope (UNE) party take part in a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, (C), presidential candidate of the National Unity of Hope (UNE) party, arrives to a campaign rally and salutes her supporters in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, (C), presidential candidate of the National Unity of Hope (UNE) party, arrives to a campaign rally in and salutes her supporters in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, presidential candidate of the National Unity of Hope (UNE) party, salutes her supporters during a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, (C), presidential candidate of the National Unity of Hope (UNE) party, salutes her supporters during a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, (L), presidential candidate of the National Unity of Hope (UNE) party, salutes her supporters during a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres, (C), presidential candidate of the National Unity of Hope (UNE) party, arrives to a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Supporters of the National Unity of Hope (UNE) party take part in a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Sandra Torres (C), presidential candidate of the National Unity of Hope (UNE) party, arrives to a campaign rally in Mixco, on the outskirts of Guatemala city, October 18, 2015. Sandra Torres, the presidential candidate of the UNE political party and the ex-wife of former President Alvaro Colom, will run in the presidential elections on October 25, 2015. REUTERS/Jorge Dan Lopez

Presidential candidate Sandra Torres speaks during a news conference in Guatemala City September 7, 2015. Sandra Torres, the ex-wife of former President Alvaro Colom, had 19.62 percent of the votes, just ahead of conservative businessman Manuel Baldizon with 19.60 percent during Sunday's presidential election. Torres and Baldizon are fighting for a second-place finish after coming behind comic actor Jimmy Morales who had 23.92 percent support. REUTERS/Jose Cabezas

Presidential candidate Sandra Torres arrives for a news conference in Guatemala City September 7, 2015. Sandra Torres, the ex-wife of former President Alvaro Colom, had 19.62 percent of the votes, just ahead of conservative businessman Manuel Baldizon with 19.60 percent during Sunday's presidential election. Torres and Baldizon are fighting for a second-place finish after coming behind comic actor Jimmy Morales who had 23.92 percent support. REUTERS/Jose Cabezas

Presidential candidate Sandra Torres participates in a news conference in Guatemala City September 7, 2015. Sandra Torres, the ex-wife of former President Alvaro Colom, had 19.62 percent of the votes, just ahead of conservative businessman Manuel Baldizon with 19.60 percent during Sunday's presidential election. Torres and Baldizon are fighting for a second-place finish after coming behind comic actor Jimmy Morales who had 23.92 percent support. REUTERS/Jose Cabezas

Presidential candidate Sandra Torres arrives for a news conference in Guatemala City September 7, 2015. Sandra Torres, the ex-wife of former President Alvaro Colom, had 19.62 percent of the votes, just ahead of conservative businessman Manuel Baldizon with 19.60 percent during Sunday's presidential election. Torres and Baldizon are fighting for a second-place finish after coming behind comic actor Jimmy Morales who had 23.92 percent support. REUTERS/Jose Cabezas

Presidential candidate Sandra Torres participates in a news conference in Guatemala City September 7, 2015. Sandra Torres, the ex-wife of former President Alvaro Colom, had 19.62 percent of the votes, just ahead of conservative businessman Manuel Baldizon with 19.60 percent during Sunday's presidential election. Torres and Baldizon are fighting for a second-place finish after coming behind comic actor Jimmy Morales who had 23.92 percent support. REUTERS/Jose Cabezas

Guatemalan presidential candidate Sandra Torres from the centre-left National Unity of Hope party meets with the media in Guatemala City, Guatemala September 5, 2015. Torres, the former first lady who famously divorced her husband, former president Alvaro Colom, to run for election, is finally getting a shot at the country's top job with a campaign that taps into rising anger over a graft scandal afflicting President Otto Perez. REUTERS/Jose Cabezas

Guatemalan presidential candidate Sandra Torres from the centre-left National Unity of Hope party meets with the media in Guatemala City, Guatemala September 5, 2015. Torres, the former first lady who famously divorced her husband, former president Alvaro Colom, to run for election, is finally getting a shot at the country's top job with a campaign that taps into rising anger over a graft scandal afflicting President Otto Perez. REUTERS/Jose Cabezas

Guatemalan presidential candidate Sandra Torres from the centre-left National Unity of Hope party meets with the media in Guatemala City, Guatemala September 5, 2015. Torres, the former first lady who famously divorced her husband, former president Alvaro Colom, to run for election, is finally getting a shot at the country's top job with a campaign that taps into rising anger over a graft scandal afflicting President Otto Perez. REUTERS/Jose Cabezas

Guatemalan presidential candidate Sandra Torres from the centre-left National Unity of Hope party meets with the media in Guatemala City, Guatemala September 5, 2015. Torres, the former first lady who famously divorced her husband, former president Alvaro Colom, to run for election, is finally getting a shot at the country's top job with a campaign that taps into rising anger over a graft scandal afflicting President Otto Perez. REUTERS/Jose Cabezas

Guatemalan presidential candidate Sandra Torres from the centre-left National Unity of Hope party meets with the media in Guatemala City, Guatemala September 5, 2015. Torres, the former first lady who famously divorced her husband, former president Alvaro Colom, to run for election, is finally getting a shot at the country's top job with a campaign that taps into rising anger over a graft scandal afflicting President Otto Perez. REUTERS/Jose Cabezas

Ecuador's President Rafael Correa (R) speaks with Guatemala's former president Alvaro Colom as they leave the beatification ceremony of the late Archbishop of San Salvador Oscar Arnulfo Romero at El Salvador del Mundo square in San Salvador, May 23, 2015. Salvadoran Archbishop Romero was beatified on Saturday, the final step before sainthood, 35 years after he was gunned down at the altar by a right-wing death squad for denouncing the oppression of the poor by the military dictatorship. REUTERS/Jorge Dan Lopez

(L-R) Guatemala's former president Alvaro Colom, new Guatemalan Congress President Gudy Rivera, president-elect Otto Perez Molina and vice president-elect Roxana Baldetti sing the national anthem before Perez Molina's appointment as the country's new president in Guatemala City January 14, 2012.
REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS)

Guatemala's President Alvaro Colom (C) shakes hands with U.S. ambassador to Guatemala Arnold Chacon as Vice President Rafael Espada looks on, before a report on experiments on Guatemalans by U.S. researchers between 1946 and 1948, at the National Palace in Guatemala City December 7, 2011. Wednesday's report showed that 2,082 Guatemalans were infected with venereal diseases, gonorrhoea, syphilis and characinoid during experiments performed by ten American doctors in Guatemala. Chacon, who received a copy of the report titled "Damage Consent," reiterated the apology that U.S. President Barack Obama offered in October 2010. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS HEALTH)

Guatemala's President Alvaro Colom speaks during a report on experiments on Guatemalans by U.S. researchers between 1946 and 1948, at the National Palace in Guatemala City December 7, 2011. Wednesday's report showed that 2,082 Guatemalans were infected with venereal diseases, gonorrhoea, syphilis and characinoid during experiments performed by ten American doctors in Guatemala. U.S. ambassador to Guatemala Arnold Chacon, who received a copy of the report titled "Damage Consent," reiterated the apology that U.S. President Barack Obama offered in October 2010. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS HEALTH)

Guatemala's President Alvaro Colom (L) sings the national anthem next to U.S. ambassador to Guatemala Arnold Chacon, before a report on experiments on Guatemalans by U.S. researchers between 1946 and 1948, at the National Palace in Guatemala City December 7, 2011. Wednesday's report showed that 2,082 Guatemalans were infected with venereal diseases, gonorrhoea, syphilis and characinoid during experiments performed by ten American doctors in Guatemala. Chacon, who received a copy of the report titled "Damage Consent," reiterated the apology that U.S. President Barack Obama offered in October 2010. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS HEALTH)

Guatemala's President Alvaro Colom (L) embraces Hondura's President Porfirio Lobo during the close of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Nicaragua's President Daniel Ortega (L) embraces Mexico's President Felipe Calderon as Guatemala's President Alvaro Colom (BACK) looks on during the close of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Mexico's President Felipe Calderon (C) and Honduras' President Porfirio Lobo shake hands next to Guatemala's President Alvaro Colom during the close of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

(L to R) The Dominican Republic's President Leonel Fernandez talks with his counterparts Daniel Ortega of Nicaragua and Alvaro Colom of Guatemala during the close of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Guatemala's President Alvaro Colom stands at the close of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Officials pose for a family photo at the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida, December 5, 2011. (Back L to R) Magdy Martinez, Resident Coordinator of the United Nations in Mexico, Elayne Whyte, Executive Director of the Mesoamerica Project, Enrique Garcia, Chief Executive of the Development Bank in Latin America, Nick Rischbieth, CEO of American Bank for Economic Integration, Hugo Martinez, Minister of Foreign Affairs of El Salvador, Wilfred Erlington, Minister of Foreign Affairs Relations and Foreign Trade of Belize, Maria Angela Holguin, Minister of Foreign Affairs of Colombia, Luis Alberto Moreno, President of the Inter-American Development Bank, Juan Daniel Aleman, Secretary General of the Central American Integration System, Philippe Lamy ,representative of the World Trade Organization and Hugo Guzman, advisory of the Economic Commission for Latin America and the Caribbean (Front L to R) Alfio Piva Mesen, First Vice-President of Costa Rica, the Dominican Republic's President Leonel Fernandez, Nicaragua's President Daniel Ortega, Guatemala's President Alvaro Colom, Mexico's President Felipe Calderon, Honduras' President Porfirio Lobo, Panama's President Ricardo Martinelli and Chile's President Sebastian Pinera. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Officials pose for a family photo at the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida, December 5, 2011. (Back L to R) Magdy Martinez, Resident Coordinator of the United Nations in Mexico, Elayne Whyte, Executive Director of the Mesoamerica Project, Enrique Garcia, Chief Executive of the Development Bank in Latin America, Nick Rischbieth, CEO of American Bank for Economic Integration, Hugo Martinez, Minister of Foreign Affairs of El Salvador, Wilfred Erlington, Minister of Foreign Affairs Relations and Foreign Trade of Belize, Maria Angela Holguin, Minister of Foreign Affairs of Colombia, Luis Alberto Moreno, President of the Inter-American Development Bank, Juan Daniel Aleman, Secretary General of the Central American Integration System, Philippe Lamy ,representative of the World Trade Organization and Hugo Guzman advisory of the Economic Commission for Latin America and the Caribbean (Front L to R) Alfio Piva Mesen, First Vice-President of Costa Rica, the Dominican Republic's President Leonel Fernandez, Nicaragua's President Daniel Ortega, Guatemala's President Alvaro Colom, Mexico's President Felipe Calderon, Honduras' President Porfirio Lobo, Panama's President Ricardo Martinelli and Chile's President Sebastian Pinera. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

(From L to R) Chile's President Sebastian Pinera and his counterparts, Nicaragua's Daniel Ortega, Guatemala's Alvaro Colom and Mexico's Felipe Calderon talk before the official photo of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Guatemala's President Alvaro Colom attends the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida, December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

(From L to R) Guatemala's President Alvaro Colom, Mexico's Minister of Foreign Relations Patricia Espinoza and Mexico's President Felipe Calderon attend the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

(From L to R) Guatemala's President Alvaro Colom, Mexico's Minister of Foreign Relations Patricia Espinoza, Mexico's President Felipe Calderon and his Honduran counterpart Porfirio Lobo attend the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS BUSINESS)

Guatemala's President Alvaro Colom speaks during a breakfast meeting with Central American leaders before the opening of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS)

Mexico's President Felipe Calderon (L) and his counterparts from Guatemala, Alvaro Colom (C) and Honduras, Porfirio Lobo, meet during a breakfast meeting with other Central American leaders before the opening of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS)

Mexico's President Felipe Calderon (R) and Guatemala's Alvaro Colom embrace each other next to Chile's President Sebastian Pinera during a breakfast meeting with Central American leaders before the opening of the XIII Tuxtla Summit "Mechanism of Dialogue and Concentration", which seeks to strengthen trade ties between the countries of Central America, in Merida December 5, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS)

Guatemala's President Alvaro Colom (L) is welcomed by Yucatan governor Ivonne Pacheco upon his arrival at the airport, to attend the second Summit of the Pacific Alliance in Merida, December 3, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS)

Guatemala's President Alvaro Colom is seen upon his arrival at the airport to attend the second Summit of the Pacific Alliance in Merida December 3, 2011. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: POLITICS)

Guatemala's President Alvaro Colom arrives at the plenary session of the summit of the Community of Latin American and Caribbean States (CELAC) in Caracas December 3, 2011. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: POLITICS)

Guatemala's President Alvaro Colom attends the plenary session of the summit of the Community of Latin American and Caribbean States (CELAC) in Caracas December 3, 2011. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: POLITICS)

Presidents (first row L-R): Rafael Correa of Ecuador, Juan Manuel Santos of Colombia, Evo Morales of Boliva, Hugo Chavez of Venezuela, Cristina Fernandez of Argentina, Dilma Rousseff of Brazil, Raul Castro of Cuba, President-elect Otto Perez of Guatemala, Alvaro Colom of Guatemala, Jose Lobo of Honduras (2nd row L-R): Dominica's Prime Minister Roosevelt Skerrit, Desi Bouterse of Suriname, Fernando Lugo of Paraguay, Daniel Ortega of Nicaragua, Felipe Calderon of Mexico, Ricardo Martinelli of Panama, Leonel Fernandez of Dominican Republic, Jose Mujica of Uruguay, Barbados' Prime Minister Freundel Stuart and Grenada's Prime Minister Tillman Thomas pose for a family photo during the 33-member Community of Latin American and Caribbean States (CELAC) summit in Caracas December 2, 2011. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: POLITICS)

Venezuela's President Hugo Chavez greets Guatelama's President Alvaro Colom (L) and President-Elect Otto Perez during the opening session of the summit of leaders from the 33-member Community of Latin American and Caribbean States (CELAC), in Caracas December 2, 2011. REUTERS/Jorge Silva (VENEZUELA - Tags: POLITICS)

Venezuela's President Hugo Chavez and his daughters Rosines (L) and Maria greet Guatelama's President Alvaro Colom during the opening session of the summit of leaders from the 33-member Community of Latin American and Caribbean States (CELAC), in Caracas December 2, 2011. REUTERS/Jorge Silva (VENEZUELA - Tags: POLITICS)

Former Guatemalan President Alfonso Portillo laughs while waiting for the elevator at the Supreme Court in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Former Guatemalan President Alfonso Portillo speaks to the media at the Supreme Court in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Former Guatemalan President Alfonso Portillo waits for the elevator at the Supreme Court in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Former Guatemalan President Alfonso Portillo enters the elevator at the Supreme Court in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Former Guatemalan President Alfonso Portillo stands near the elevator at the Supreme Court in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Former Guatemalan President Alfonso Portillo waits at the Supreme Court in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Former Guatemalan President Alfonso Portillo speaks to the media in Guatemala City November 17, 2011. Portillo will be extradited to the United States to face money laundering charges, the country's current president Alvaro Colom said on Tuesday. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: CRIME LAW POLITICS)

Guatemala's President Alvaro Colom (R), and President-elect, retired general Otto Perez Molina of the right-wing Patriot Party, shake hands during a news conference in the Presidential House in Guatemala City, November 9, 2011. Colom said that this meeting was held to initiate a process of transition of the government. Molina will take office as president on January 14, 2012. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS)

Guatemala's President Alvaro Colom (R), and President-elect, retired general Otto Perez Molina of the right-wing Patriot Party, attend a news conference in the Presidential House in Guatemala City, November 9, 2011. Colom said that this meeting was held to initiate a process of transition of the government. Molina will take office as president on January 14, 2012. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS)

Guatemala's President Alvaro Colom speaks during a news conference at the office of the National Coordinator of Disaster Reduction (CONRED) about the recent heavy rains in the country, in Guatemala City October 14, 2011. The Guatemalan authorities on Wednesday declared that the country was on "red alert" after a tropical storm called 12E hit the country. In addition, 18 people have died and thousands are affected by the rains, local media reported. REUTERS/William Gularte (GUATEMALA - Tags: DISASTER ENVIRONMENT POLITICS)

Otto Perez Molina, presidential candidate from the Patriot Party (PP), and former General, speaks during a news conference after meeting with Guatemalan President Alvaro Colom in the Presidential House in Guatemala City, October 12, 2011. Guatemala's presidential election race has tightened with a new poll showing the leading right-wing candidate may be vulnerable to voter concern about his links to the country's brutal military past. Retired general Otto Perez has led opinion polls in the Central American nation for months, and a survey published by daily Prensa Libre on Wednesday still gave him a clear lead over his centrist rival for a second round run-off on Nov. 6. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS ELECTIONS)

Otto Perez Molina, presidential candidate from the Patriot Party (PP), and former General, attends a news conference after meeting Guatemalan President Alvaro Colom in the Presidential House in Guatemala City, October 12, 2011. Guatemala's presidential election race has tightened with a new poll showing the leading right-wing candidate may be vulnerable to voter concern about his links to the country's brutal military past. Retired general Otto Perez has led opinion polls in the Central American nation for months, and a survey published by daily Prensa Libre on Wednesday still gave him a clear lead over his centrist rival for a second round run-off on Nov. 6. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS ELECTIONS)

Alvaro Colom, President of Guatemala (R), shakes hands with Otto Perez Molina, presidential candidate from the Patriot Party (PP), and former General, during a news conference in the Presidential House in Guatemala City, October 12, 2011. Guatemala's presidential election race has tightened with a new poll showing the leading right-wing candidate may be vulnerable to voter concern about his links to the country's brutal military past. Retired general Otto Perez has led opinion polls in the Central American nation for months, and a survey published by daily Prensa Libre on Wednesday still gave him a clear lead over his centrist rival for a second round run-off on Nov. 6. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: POLITICS ELECTIONS)