Polling has at times shown a close race, but Cruz has consistently led.
O'Rourke is running to unseat Sen.
Tonight we find out if media hype and celebrity endorsements can win the Democrats a seat in the U.S. Senate in Texas.
Triumph spoke with Democratic candidate Beto O'Rourke first and joked with him about his support with younger voters. Triumph jokingly suggests that voters of color should "act more white" by dropping The Marvelous Mrs. Maisel into conversation, and mentioning Ed Sheeran as much as possible.
"This is the man, what's Ted Cruz have that you don't have?" You can see Beto trying (and failing) not to laugh. Though the senator has since become one of Trump's staunchest defenders, the president nonetheless staged a massive rally in Houston just two weeks before Election Day to ensure his conservative base wouldn't abandon Cruz.More news: Fox News 'Does Not Condone' Hannity, Pirro Participation in Trump Rally
"I just want to say to Triumph, my advice is walk away", Cruz quipped.
Triumph then asked voters about Cruz looking like the Zodiac killer, adding that he'd kill far more people than the Zodiac killer with his plans to repeal Obamacare. Given that Conan O'Brien's TBS show "Conan" is on hiatus, Colbert explains at the start of the segment above, O'Brien was happy to loan one of his correspondents, Triumph the Insult Comic Dog, to Colbert.
"Hey, I support spaying and neutering", Triumph said, "just like Trump did to you!"
Cruz tried to counter the dog puppet by saying Democrats were responsible for him being snipped. Early voting in the state's 30 largest counties alone already exceeded the total number of ballots cast during the 2014 midterm elections in Texas.