Nicolas Maduro so far has led by imitation, seeking to fill the shoes of a president whose uncanny vigor, mischievous humor and political wiles sowed a revolution and transformed a nation. As Hugo Chavez did during his 14-year presidency, Maduro has stoked confrontation, and shed tears. While steering Venezuela through the trauma of Chavez's death, Maduro has pinned his move to the top on his beloved predecessor.