I called the top number (the "NATIONWIDE" number).

They were very prompt. I asked them if someone - regardless of political leaning - were to call, what they would actually do, and how this would be a better solution to other services like the ones listed by @mox@lemmy.sdf.org.

One thing is there's no real-time solution available anywhere in the U.S., from what I can find, nor what they are aware of.

Next, when we call, they will route your call to the proper escalation path, depending on the nature of the call. This also means that if you're being intimidated, they will reach out to the law enforcement for your polling station (city/county/state as needed). This is regardless of your political leaning. They would be contacting the proper authorities on behalf of the Democratic National Support Hotline, which carries a bit of weight, as they do have an army of lawyers at their disposal, for if it's not resolved in a timely fashion.

I was on hold for a while to get a better understanding of how things worked, to see if this was, in fact, a valid and viable option.

Yes, it IS partisan org, but they state they will not play partisan politics with intimidation.

TL;DR: they are there to do something the government can't/won't - provide immediate resolution to voter intimidation regardless of your political leaning.