They aren't, they are contracting it from a firm called Shadow Inc, who also seem to have sold the same app to the Nevada Democratic Party.

Shadow Inc sounds.. shady.

From their site:

"When a light is shining, Shadows are a constant companion. We see ourselves as building a long-term, side-by-side “Shadow” of tech infrastructure to the Democratic Party and the progressive community at large."

https://shadowinc.io/about

Imagine being on that development team looking at Feb 22 to get it fixed.

I mean, a google form would have done the job just fine right? It's insane to me that they decided to have this custom built instead.

Doesn't the Docs frontend have a hard limit at 50 concurrent editors?

Google Forms appends each form submission as a rows in a spreadsheet, and isn't limited that way.

Of course, some account has to own the spreadsheet and hence have write access. So it's not the ideal vote-tallying system.

Although all edits are logged...

Wouldn't this whole system be fine with a Google Form submitted to a Doc?

I wonder if you could get around that by giving groups of caucus precincts a five minute time slot?