Senate candidate canceled her meeting with Des Moines Register editorial board.
Scott Brown (R) closes in on Sen. Jeanne Shaheen (D-N.H.) in a new independent survey.
Poll gives the Republican 48 percent support among likely voters.
The issue adds another complication to the Republican's efforts in New Hampshire.
In the last week alone, 10,800 negative ads aired in the state, more than one per minute.
The EB-5 scandal has threatened Republican Mike Rounds's Senate campaign.
Ernst leads Braley 48 percent to 46 percent among likely voters in new poll.
The hack doesn’t appear to have taken over the main pages of Thom Tillis's website.
“I think her opponent, Democrat [Rep. Bruce Braley], is not a strong candidate,” he said.
The former vice presidential nominee touted Thom Tillis (R) as a can-do leader.