A liberal grassroots activist group claims to have raised more than $500,000 in 24 hours to challenge vulnerable Republicans who voted for the GOP's plan to repeal and replace ObamaCare. The group, Swing Left, has been touting its fundraising haul on Twitter as the donations pour in. And it noted in a release that $150,000 of that total was raised in the first hour after the Thursday afternoon vote. Donors gave $100,000 specifically for the eventual Democratic challenger to Rep. Darrell Issa (R-Calif.), a top Democratic target who voted for the ObamaCare repeal bill.