Gun control activists are ramping up spending to elect presumptive Democratic nominee Kamala Harris president and help Democrats capture the House of Representatives in November. GIFFORDS, a gun violence prevention group founded by former Congresswoman Gabrielle Giffords, on Friday announced a $15 million campaign targeting battleground state voters. The ad buy is for television, digital advertising and direct mail, as well as for sending Giffords and surrogates to stump for Harris and down-ballot candidates who support tougher gun laws. "With just over 100 days until election day, GIFFORDS will redouble its efforts to support champions who are committed to saving lives —