Running to the left of an incumbent Republican in Texas? LOL!
Just ask KBH.
...Republican Party voters (never mind Republican Party primary voters) in Texas love Ted Cruz. He's one of the safest Senators up for reelection in 2018. His chances of losing either the primary or the general essentially round down to zero. A slight chance exists he may decide he is finished with the Senate, considering he's not exactly the most beloved guy there, but failing that he'll return for six more years.