We should be worried about all the Republican candidates more or less equally. The differences in their campaign rhetoric are going to be a lot greater than the differences in the policy outcomes we'll see if any one of them is president.
Nate Silver is somewhat reassuring at this point. According to him, these early polls are not very indicative of anything. I obsess over politics, but apparently I'm in the minority. 80% of the public is paying no attention to the election yet. So really, Trump and Cruz are getting 20%+ of the support of the 20% who are paying attention, and 80% are undecided. The bulk of the public will not be paying attention until after the Iowa caucus in February. Only after that will polls start measuring anything like reality, especially among republicans.
@2: No one likes Cruz. No senators like him, and at least half the voting public not only don't like him, but want to punch him in the face more than any other politician currently alive (and that includes Dick Cheney).
Cruz might beat Trump to the nomination, but he has the charisma of three day old fish. I'm not worried he might actually get elected.
I don't really worry about the parade of clowns. Most of them will go back to their circus tent after the summer. They are a magnet to show us who the people we really need to worry about (the neighbors who keep them afloat).
This has become a trend. Republicans flirt with clowns until they finally pick the guy that stands the best chance of winning. Herman Cain was leading until they finally settled on Romney. Huckabee then McCain. So going from the clown car (Trump, Fiorina and Carson) to Cruz might seem like it is just par for the course. Unlike the rest of front runners, Cruz is actually qualified.
The thing is, he stands no chance. Rubio is the only guy at this point that is both likable and reasonably qualified. The longer it takes the Republicans to figure this out the better.
Cruz might beat Trump to the nomination, but he has the charisma of three day old fish. I'm not worried he might actually get elected.
"Is he a rat-faced weasel, or a weasel-faced rat?"
"Yes."
The thing is, he stands no chance. Rubio is the only guy at this point that is both likable and reasonably qualified. The longer it takes the Republicans to figure this out the better.