'It appears every candidate either can't or won't answer the question about how to reduce gun violence,' said gun safety advocate Fred Guttenberg.

Giffords and March for Our Lives are asking law students to sign a pledge saying they won't represent the gun industry.

New Hampshire Republican Senate nominee Don Bolduc is running to unseat incumbent Democratic Sen. Maggie Hassan, a strong supporter of gun safety legislation.

Wisconsin Republican incumbent Sen. Ron Johnson has opposed every attempt at passing legislation to curb gun violence.