Image provided by Command Campaign Hugo Chavez shows Venezuela's Acting President Nicolas Maduro attending a rally in Lara State, Venezuela, on March 24, 2013. (Xinhua/Command Campaign Hugo Chavez)

Image provided by Command Campaign Hugo Chavez shows Venezuela's Acting President Nicolas Maduro attending a rally in Lara State, Venezuela, on March 24, 2013. (Xinhua/Command Campaign Hugo Chavez)

Image provided by Command Campaign Hugo Chavez shows Venezuela's Acting President Nicolas Maduro attending a rally in Lara State, Venezuela, on March 24, 2013. (Xinhua/Command Campaign Hugo Chavez)

Image provided by Command Campaign Hugo Chavez shows Venezuela's Acting President Nicolas Maduro attending a rally in Lara State, Venezuela, on March 24, 2013. (Xinhua/Command Campaign Hugo Chavez)

Image provided by Command Campaign Hugo Chavez shows Venezuela's Acting President Nicolas Maduro (R) attending a rally in Lara State, Venezuela, on March 24, 2013. (Xinhua/Command Campaign Hugo Chavez)