"Mr. Maduro’s unpopularity stems from the collapse of Venezuela’s economy, which began under Mr. Chavez. Mr. Maduro has done nothing to slow the decline;"

Actually, the economic collapse began some 35 years ago. At the end of the 1970s Venezuela was the richest country in South America but failed to diversify its economy and, consequently, developed many of the characteristics of a petro state, with significant poverty and inequality. That is what brought Chavez. However he and Maduro were just as lazy and incompetent and Venezuela continued to rely on oil revenues. Of course, that fixed nothing.