Iowa's Democratic U.S. Senate race turns contentious as candidates vie to take on Republican Sen. Joni Ernst

Des Moines Register

The super PACs working on her behalf do take donations from corporations and other groups that don’t have to disclose their donors. And although they cannot officially coordinate with Greenfield’s campaign, they are blurring the line, said Adav Noti, the senior director for trial litigation and chief of staff at the Campaign Legal Center, a campaign finance watchdog group. Although super PACs can’t discuss those messages with the campaign, they can use the information and the images to cut television and digital ads that run on the candidate's behalf. “That exact pattern is increasingly common,” Noti said. “It started a couple election cycles ago.”

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