> I think the plan was clearly that they would reuse the software for every caucus during this primary, so the $60K was one of a series of payments for the same product.

No. The plan was that it would be used in the IA and NV caucuses, which is why the IA and NV Democratic Parties jointly purchased it.

The other states and territories using caucuses were never planning on using it. (And mostly, the other caucuses are structured differently with more primary-like features, so it probably wouldn't make sense to use shared software tailored to the IA and NV caucuses for them.)

Only four states use caucuses (IA, NV, TX, CO).

2(ish). CO is a regular primary in 2020 (post prop 107/108 in 2016). TX democratic party no longer uses caucus.

Several US territories and other states[1] hold democratic caucuses of one form or another, but are less notable due to timing/delegate count.

[1] https://www.nytimes.com/2020/02/04/us/politics/what-states-c...

CO cancelled all caucuses after 2016 when 10's of thousands of people got turned away because most of the gathering places were over capacity. Sanders supporters especially felt extremely underrepresented since they were young and showed up less early than others

For 2020 in the Democratic nominating process, 3 states and 3 territories, actually: IA, NV, WY, American Samoa, Guam, and the Virgin Islands.