https://www.nytimes.com/2020/02/05/us/politics/iowa-caucus-problems.html

“Real” Americans.

«Besides an untested, buggy smartphone app that was used for the first time, a backup hotline number for caucus organizers to call in results was flooded with nuisance calls after the number was disseminated on social media, party leaders said.

“All the Trump people from around the country started calling and tearing everybody a new one,” Ken Sager, the Iowa Democratic Party treasurer, told members of the party’s central committee on the 1 hour 20 minute call.

There were 85 phone lines to take calls at the party headquarters in Des Moines, said Kevin Geiken, the party’s executive director. But caucus chairs faced long wait times “because of the excessive calls we were getting” and because the legitimate calls to report results each took about five minutes, twice as long as in a dry run.»