"But, this is going to be a massive black mark on this event if we significantly delay because of technical issues given the scepticism out there around the electoral process, given the focus on Iowa, given the all of the changes that were put in, the reforms that were put in. We are in this for the long haul".
President Donald Trump's campaign quickly seized on the issue to sow doubt about the validity of the results. "So I'm going to tell you what I do know", Sen. She echoed Biden's optimism: "The road won't be easy".
Former vice president Joe Biden said he, too, felt good about the results, while Mayor Pete Buttigieg flat-out claimed victory, saying the outcome would "shock the nation".
"And when those results are announced I have a feeling that we will be doing very, very well in Iowa".
Democrats hoped that Iowa's caucuses would provide some clarity for what has been a muddled nomination fight for much of the previous year. "We are, as other campaigns are, very concerned with what they might release: the alignment numbers are not adding up".
What happens next in the presidential primary race?
"He sees President Trump as the greatest threat to our republic, the exact thing our Founders feared in a leader", Siler said, noting that the campaign has spent the last three weeks in Iowa and Walsh has visited the state almost every week since he announced his candidacy in August.
"In addition to the tech systems being used to tabulate results, we are also using photos of results and a paper trail to validate that all results match and ensure that we have confidence and accuracy in the numbers we report", she said.
"This is simply a reporting issue", she said, denying there was "a hack or an intrusion".
One New York Times reporter said that the lack of results from Iowa is not normal, noting that in 2016 nearly 80 percent of the total vote was counted by around 10:00 p.m. EST. It covers findings from a survey of over 3,000 likely Iowa Democratic caucus-goers.
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But with Iowa representing the first votes cast in the nomination process, it is important to do well for fundraising and momentum purposes.
The top four candidates are Vermont Sen. In the past, just a state delegate equivalent was released. But instead of clear optimism, a growing cloud of uncertainty and intraparty resentment hung over the election as the prospect of an unclear result raised fears of a long and divisive primary fight in the months ahead.
At this point on caucus night four years ago, returns were in from 85% of Iowa precincts.
The president's campaign eagerly seized on the Democrats' problems.
Linn County Auditor Joel Miller, who ran a precinct in the Cedar Rapids suburb of Robins, said some app users may not have gotten the instructions on how to log into the system. Bernie Sanders, while seniors favor Joe Biden. In the case of Iowa, those supporting a particular candidate must spend an hour or more standing up, in both a metaphorical and literal sense, for the one they are backing.
New voters played a significant role in shaping Iowa's election.
"Democrat party meltdown", Trump campaign manager Brad Parscale said in a stinging tweet.
She told supporters: "Even in a crowded field of candidates, even during the well-earned impeachment hearing of Donald J. Trump, which had me bolted to my senate desk for the last two weeks, we kept fighting and you kept fighting for me".
Polk County precinct chairs were being advised to take pictures of caucus results and text them to the Polk County executive director who is driving them to the party headquarters, according to a Democratic operative familiar with the situation.