CARACAS (Reuters) - Venezuela's opposition faces a weak adversary in an upcoming presidential election in the form of unpopular President Nicolas Maduro, but it must overcome the more formidable challenge of abstention in its own ranks.
Maduro's approval ratings are languishing at around 20 percent in a country that was once a byword in South America for oil-financed opulence but now faces a collapsing economy, runaway inflation and rising malnutrition.
