The Texas Republican warned that if “on Election Day, people are angry, they've given up hope and they're depressed, which is what Pelosi and Schumer want them to be,” there could be “a bloodbath of Watergate proportions,” which would entail losing the White House and both houses of Congress. 

But “if people are optimistic, they are going back to work, they have a positive future, we could see a fantastic election,” Cruz said, which would mean President Trump getting reelected by a “big margin” and Republicans winning both houses of Congress.  

“I don't recall an election in my lifetime where the delta, the spread between those two, was as dramatic as it is,” he told CNBC’s “Squawk Box.”