Supporters of opposition leader Henrique Capriles face off against riot police as they demonstrated for a recount of the votes in Sunday's election, in Caracas, Venezuela, on April 15, 2013. Hundreds of protesters clashed with police in the Venezuelan capital after Capriles called for demonstrations to demand a recount of votes from Sunday's election to replace the late Hugo Chavez. #

Venezuela's interim President Nicolas Maduro holds the official certificate declaring him winner of the presidential election at the Electoral Council in Caracas, Venezuela, on April 15, 2013. Venezuela's government-friendly electoral council quickly certified the razor-thin presidential victory of Hugo Chavez' hand-picked successor. Nicolas Maduro was elected by a margin of 50.8 percent to 49 percent over challenger Henrique Capriles. #

Opposition presidential candidate Henrique Capriles holds up a graphic and photograph as he says that an unusually high number of votes during Sunday's presidential election were made by voters who were assisted by an electoral worker, during a press conference at his campaign headquarters in Caracas, Venezuela, on April 16, 2013. Capriles called off a planned opposition march in Caracas on Wednesday, demanding a vote-by-vote recount of Sunday's presidential election after President-elect Nicolas Maduro summoned his supporters to take to the streets in the capital, raising the possibility of a confrontation with anti-government protesters. #

Supporters of Venezuelan opposition presidential candidate Henrique Capriles protest in Caracas, on April 15, 2013. Venezuela's opposition piled pressure on electoral authorities Monday to recount the tight vote to replace late leader Hugo Chavez. #

Opposition supporters bang pots against interim President Nicolas Maduro during a "cacerolazo" protest in Caracas, on April 15, 2013. National Guard troops fired tear gas and plastic bullets to disperse students protesting the official results in Venezuela's disputed presidential election which gave Maduro a very narrow victory. #

An opposition supporter does a wheelie on his motorcycle as others bang pots during a protest against interim President Nicolas Maduro in Caracas, on Monday, April 15, 2013. #

A boy jumps over a barricade of burning garbage that supporters of Henrique Capriles used to block a street, as they demonstrated for a recount of the votes in Sunday's election, in Caracas, on April 15, 2013. Hundreds of protesters clashed with police in the Venezuelan capital on Monday after Capriles called for demonstrations to demand a recount of votes from Sunday's election to replace the late Hugo Chavez. #

A "Chavista" demonstrator, and supporter of President-elect Nicolas Maduro, holds a photo of the late President Hugo Chavez during a march in front of the National Electoral Council (CNE) in Caracas, on April 17, 2013. #

Elvira Guzman mourns over the body of her husband, 45-year-old Jose Luis Ponce, a Chavista militant who was allegedly killed on Monday in a confrontation with opposition supporters, as another person places an image of Chavez on his coffin during his wake in Caracas, on April 17, 2013. The political heirs of Hugo Chavez filled Venezuela's airways Wednesday with a steady drumbeat of attacks on opposition leader Henrique Capriles, calling him a coup-plotter and said he was inciting post-election violence that had claimed seven lives, including Ponce, and injured 61. Capriles called the government assault a smoke screen to divert attention from his demand for a recount of every ballot from Sunday's election. #

Demonstrators, one holding a poster of opposition presidential candidate Henrique Capriles, shout slogans against the government and the official election results in the Altamira neighborhood of Caracas, on April 15, 2013. #

A Venezuelan woman holds up a shirt for sale that reads in Spanish "Count my vote" as others sign a petition in a park in Panama City, panama, on April 17, 2013. Venezuelans living in Panama are collecting signatures to send to Panama's President Ricardo Martinelli to demand their presidential election ballots be re-counted. The Obama administration has stood almost alone, along with Paraguay and Panama, in insisting on a recount of Sunday's presidential election. #

Supporters of opposition leader Henrique Capriles scuffle with riot police as they block a highway while demonstrating for a recount of the votes in Sunday's election, in Caracas, on April 15, 2013. #

Opposition supporters and students run away from tear gas after they clashed with riot police as they tried to block a highway in Caracas, on Monday, April 15, 2013. #

Riot police fire rubber bullets as demonstrators throw rocks at them, during clashes after opposition supporters and students blocked a highway in the Altamira neighborhood of Caracas, on April 15, 2013. #

A group of Venezuelans supporting Henrique Capriles shout during a protest outside the Venezuelan embassy in Panama City, on April 15, 2013. Capriles supporters protest by banging pots and pans on the streets of the city and outside the Venezuelan embassy on Monday after Capriles called for demonstrations to demand a recount of votes from Sunday's election to replace the late Hugo Chavez. #

Supporters of Henrique Capriles hit pots and pans while taking part in a demonstration asking for a recount of the votes in Sunday's election in Caracas, on April 17, 2013. Split down the middle over an acrimonious election, Venezuelans are squaring off en masse every night at 8 p.m. in a cacophony of noise from rival factions. Supporters of opposition leader Henrique Capriles bang pots and pans in a traditional form of protest used in some Latin American nations in times of political crisis. #

Demonstrators confront the National Guard as they protest against the official results of last Sunday's presidential elections in downtown Caracas, on April 15, 2013. #

Shadows are cast on a Venezuelan national flag during a protest supporting opposition leader Henrique Capriles in Panama City, on April 15, 2013. Panama has one of the biggest Venezuelan communities in Central America. #