VOICED: La oposicion a Chavez organiza primarias

The Venezuelan opposition is actively campaigning, with upcoming primaries to select a presidential candidate. Enrique Capriles is the favored candidate, aiming to mobilize support ahead of the October elections against Hugo Chávez. The opposition is committed to fostering progress and improving the quality of life for all Venezuelans. Current polls show Capriles leading over his closest rival, Pablo Pérez, in the first open presidential primaries in Venezuela.

¿Quién es el rival más inmediato de Enrique Capriles en las primarias?

¿Qué tipo de primarias se celebrarán en Venezuela según el texto?