2018 Midterm Challengers
xkcd.com
xkcd.com
I'm a pretty big liberal myself but Beto's chances in Texas seem smaller than the size of his name implies. The polls have actually never had him higher than Cruz. At the bottom, it also says advice factored into this so maybe that was what made such a big factor?
It's smaller than a some names for lower offices, and the size of name reflects (as stated at the top) a combination of chance of winning and level of office.
Sure, this is /r/politics afterall. Oh wait..