SSI. Uses many different phone numbers in the 702 area code to do their crap, which includes political calls. They call many times a day, and could also be involved in typical telemarketing scams, who knows.
These "idiots" to say the least call three or four times a day. I think that because it reads SSI a lot of people with think it has something to do with Social Security Income. If you have caller I.D don't pick it up. If you do pick it up then hang up. Or keep talking real loud telling them you lost your hearing aid and can't hear them.