Hugo Chavez is one of the most colourful and high profile political leaders in the world, but what about his lesser-known challenger?
He is young, energetic and for the past eight months has travelled all around the country to convince Venezuelans to vote for him.
And the effort is paying off.
Forty-year-old Henrique Capriles Radonski is the best chance that the opposition has had in years of beating Chavez.
Al Jazeera's Teresa Bo joined him on the campaign trail.