Supporters of President Donald Trump flooded a hotline used by Iowa precinct chairs to report Democratic caucus results after the telephone number was posted online, worsening delays in the statewide tally, a top state Democrat told party leaders on a conference call Wednesday night.

According to two participants on the call, Ken Sagar, a state Democratic central committee member, was among those answering the hotline on caucus night and said people called in and expressed support for Trump. The phone number became public after people posted photos of caucus paperwork that included the hotline number, one of the people on the call said…

“Don’t know anything about that but maybe Democrats should consider using an app of some kind next time,” Tim Murtaugh, a spokesman for Trump’s campaign, wrote in a text message Wednesday night.