It is almost nearly impossible to even imagine that a republican senator can be challenged in Texas by a Democratic giving the long and strong history of conservative in Texas. But, then, if a Republican can beat Democratic in California for governor in the past, it is also interesting if not surprising, that Democratic can challenge Republican in Texas.
Beto O'Rourke, of Democratic, was almost unknown to many in the national stage but now his became so popular people start to remember the name even if it is so much harder compares to Ted Cruz's name.
There are many polls that says one way or the other but the fact is, it is a tense contest, it is a big deal in current political atmosphere. We may never be able to predict but for sure will be able to know the results after the mid term vote.