More than a decade after his death, the late President Hugo Chavez remains at the center of a movement in Venezuela. As his loyal successor, President Nicolas Maduro, launches his presidential campaign for the July 28 election, he plays Chavez's final presidential campaign song from 2012. "Today we start the campaign and Chavez must come on stage with his unforgettable song," Maduro told a large crowd in Caracas. IMAGES AND SOUNDBITES [COMPLETE WITH 362P8QF]