A sea of thousands of opposition supporters wave flags of Venezuela and chant: "Si se puede!" (Yes we can!) as presidential candidate Edmundo Gonzalez Urrutia greets them from a van, accompanied with opposition leader Maria Corina Machado, at his final campaign rally in Caracas. President Nicolas Maduro, who is seeking a third six-year term, trails far behind Gonzalez Urrutia in stated voter intent, but observers doubt he is ready to give up power. IMAGES AND SOUNDBITES [TO COMPLETE 364W7X6_EN, 364Z46U_EN, 364X6N8_EN]