"I think part of it is just a real resentment about where the country is going under this president and a determination to just turn it upside down — and Trump represents that more than anybody," said former Nevada Gov. Robert List, a Republican who is backing Mr. Rubio.
"We could be on the firing line in terms of the next cycle if this one doesn't come off well," said former Nevada Gov. Robert List, a Republican. "I am not sure that that message has been delivered, but it is likely that can occur if this isn't run really smoothly and professionally and with high levels of participation."