Why are some states called battleground states?: Quick Facts

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Hillary Clinton speaks into a microphone with one arm extended while Donald Trump stands behind her on stage during the 2016 presidential debate at Washington University in St. Louis.

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U.S. state Electoral College battleground state Why are some U.S. states called commonwealths?Why is New York called the Empire State?What Are Purple States?Why is Utah called the Beehive State?Why is Oklahoma called the Sooner State?Why is Connecticut called the Constitution State?Why is California called the Golden State?Why is Pennsylvania called the Keystone State?Why is Texas called the Lone Star State?Why Is Alaska Called the Last Frontier?