Republican candidate Duf Sundheim, center, answers a question as Democratic Rep. Loretta Sanchez, right, and state Attorney General Kamala Harris listen during a U.S. Senate debate at University of the Pacific in Stockton on April 25, 2016.
Republican candidate Duf Sundheim, center, answers a question as Democratic Rep. Loretta Sanchez, right, and state Attorney General Kamala Harris listen during a U.S. Senate debate at University of the Pacific in Stockton on April 25, 2016. Carlos Avila Gonzalez The Associated Press
Republican candidate Duf Sundheim, center, answers a question as Democratic Rep. Loretta Sanchez, right, and state Attorney General Kamala Harris listen during a U.S. Senate debate at University of the Pacific in Stockton on April 25, 2016. Carlos Avila Gonzalez The Associated Press