AdvertisementUnited Opposition A Challenge To Venezuela's ChavezFebruary 07, 2012Juan ForerofacebookEmailVenezuelan opposition leader Henrique Capriles (center) waves to supporters on Oct. 12, 2011. Capriles is the front-runner in the opposition primary election to pick a candidate to run against President Hugo Chavez. The primary is scheduled for Feb. 12. (AP)