UPDATE 9:15 A.M.: The Nevada Democratic Party says it will not use the same app or vendor for the Nevada caucuses that was used in Iowa on Monday night, meanwhile online records show an unknown "technology services" payment from NV Dems was made to the vendor that is reportedly behind the app. "But it seems like we will be able to eventually be able to report results with full confidence", Iowa Democratic Chair, Troy Price said.
Adam Mann, chairman of a caucus in Story County, told The Wall Street Journal that the app "wasn't working at all".
Officials from two Democratic campaigns told CNN that they were told the app to tabulate results had crashed.
'We have experienced a delay in the results due to quality checks and the fact that the IDP is reporting out three data sets for the first time.
Saying it was "clear" the app used to tally caucus results failed, Perez called on the vendor to "provide absolute transparent accounting" of what happened.
Party officials say there was no indication of a security breach and their systems were secure.
"The app that was meant to relay Caucus results to the Party failed; the Party's back-up telephonic reporting system likewise has failed".
After claiming he was the only person who could declare victory in Iowa, the president questioned how long it would be before his critics started conspiracy theories blaming Russian Federation for the delayed results.
"It's definitely going to delegitimise whoever wins", a source in former South Bend, Indiana, Mayor Pete Buttigieg's campaign said of the delay in results, adding it would dampen the immediate benefits of a strong night.
But a source in his campaign told Reuters news agency of the results delay: "It's definitely going to de-legitimise whoever wins". Confusion bred even more confusion and with nearly no information flow from the state party, it left thousands of reporters, consultants, activists and politicos with only speculation to go on. That was enough to make Elizabeth Warren and Joe Biden survive on to pick up a few delegates.
"It would be natural for people to doubt the fairness of the process", Parscale said in a statement.
Republicans have had their own problems in Iowa previously.
For Americans following along on cable TV, Monday's Iowa caucuses were a bewildering carnival of democracy - until it all went sour.
The chaos was likely to increase criticism from Democrats who have long complained the rural state with a largely white population has an outsized role in determining the presidential candidate.
New Hampshire votes second, on Feb 11, and tradition dictates that the top performers in Iowa board jets and race to The Granite State to capitalize on the momentum.