Tensions are rising in Venezuela three days after voters elected Nicolás Maduro, the chosen successor of late President Hugo Chávez, to serve out the remainder …of Chávez’s term. Venezuela’s National Electoral Council has certified Maduro’s victory after he won by about 275,000 votes. Maduro received 51 percent of the vote, while opposition leader Henrique Capriles got 49 percent. On Tuesday, President-elect Maduro accused the opposition of planning a coup against him after seven government supporters were killed and 60 people were injured in clashes after the election.Venezuela’s President-elect Maduro also accused the United States of backing efforts by the opposition to destabilize Venezuela. On Tuesday, the U.S. State Department said it will not recognize the new government unless a full vote-by-vote recount is held as demanded by Capriles. State Department spokesman Patrick Ventrell responded to questions from the Associated Press’s Matthew Lee.