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A defining moment for the Democratic Party

Taking the job of Secretary of State may have been one of the smartest moves Hillary Clinton's ever made.

File Photo:  U.S. President Barack Obama (R) chats with U.S. Secretary of State Hillary Rodham Clinton (L) during a bilateral meeting with Chinese President Hu Jintao at the Great Hall of the People on November 17, 2009 in Beijing, China.  (Photo by...
File Photo: U.S. President Barack Obama (R) chats with U.S. Secretary of State Hillary Rodham Clinton (L) during a bilateral meeting with Chinese President…Getty Images

Steve Kornacki

Steve Kornacki, author of "The Red and the Blue: 1990s and the Birth of Political Tribalism," is a national political correspondent for NBC News and MSNBC.