Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Washington (CNN) -- The United States is open to a "more constructive relationship with the Venezuelan government" following the death of Hugo Chavez on Tuesday and the expulsion of two military attaches. However, the action against the United States is "not a sign of strength," according to a senior Obama administration official, describing the move as an internal political ploy to stir nationalistic fervor. The official said Venezuela's vice president, Nicolas Maduro, "is not charismatic" and is trying to sustain the Chavez legacy and win an election by advancing "conspiracy theories." Chavez died of cancer, Maduro said. President Barack Obama said in a statement that the United States "reaffirms its support for the Venezuelan people and its interest in developing a constructive relationship" with Venezuela's government.White House interested in policies that promote democratic principlesSource says expulsion of two U.S. military aides "not a sign of strength"Obama administration wants elections to be "free and fair and credible," source saysVenezuelan President Hugo Chavez died after a long fight with cancer 
 Question:The officials believe that Chavez adherents led by _ will want to maintain the same approach, but could be more pragmatic and less confrontational.

Nicolas Maduro