https://arstechnica.com/tech-policy/2020/02/technology-glitches-prevent-same-night-release-of-iowa-caucus-results/

The Iowa caucuses are the first official event of the 2020 race for the Democratic nomination. Traditionally, results from the Iowa caucuses start being released shortly after the meetings wrap up around 9 PM Central Time. But people who tuned in to see the results this evening were disappointed, as technical glitches delayed the release of results by hours. As I write this around midnight Central Time, there are still no numbers available.

It's not yet clear exactly what's happened, but early indications suggest that technical problems with the Democratic Party's reporting system are to blame. In particular, a new smartphone app for precincts to report back to party headquarters apparently isn't working properly.