title: Max Baucus
context: Max Sieben Baucus (né Enke; born December 11, 1941) is a retired American politician and diplomat who served as a United States Senator from Montana from 1978 to 2014. A member of the Democratic Party, he was a U.S. Senator for nearly 36 years, making him the longest-serving Senator in Montana history.  President Barack Obama appointed Baucus to replace Gary Locke as the 11th United States Ambassador to China, a position that he held from 2014 until 2017.[1][2]
question: When did Max Baucus become senator of Montana?
answers: 1978