gehrels

I am trying to find a movie made in the 30's-40's starring Spence Tracy and Katharine Hepburn. Spencer tracy is running for a political position(I believe President), Kathrarine Hepburn is his wife. He has a mistress in DC but other than that is a very "Ethical"man, but he starts to compromise to gain votes. At the end he has reporters come to his Conneticut home where is family is and Katharine Hepburn becomes Drunk and so on. Does anyone remember the name of this Movie?