The US Postal Service has emerged as the example of a "public option" that conservatives point to when they argue against government sponsored health insurance. See: Post office wrong target for conservatives
Yet, as posted at FiveThirtyEight: Picking on Cliff Clavin, FedEx and UPS thrive despite the USPS but they also hand off packages to the USPS in rural areas where the private carriers don't want to go. And it is the rural population that is more conservative. Perhaps they should think about if they'd get any parcel delivery at all if it weren't for the "public option".