Representatives of Venezuela's opposition leader Henrique Capriles, Gerardo Fernandez (L) and Ramon Jose Medina walk out from the Supreme Court of Justice (TSJ) after challenging the past election process, in Caracas May 2, 2013. Capriles on Thursday challenged President Nicolas Maduro's narrow election victory before the Supreme Court, prolonging what appears to be an unlikely effort to overturn last month's vote. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: POLITICS ELECTIONS)