It's highly improbable that the right wind of politics solely resides within the lower half of the bell curve, or that there is even a strong correlation.

No, it's not, because it's a self-association. You might as well say it's highly improbable that the lowest income are also the least educated -- nothing says these variables are independent, and it's highly likely that they are, in fact, linked.

Let me put it this way: there not a strong correlation, and the relationship is too complicated to support nice, self-serving narratives.

Yes, but the average person is smart. For instance, if I average 95, 95, and 95, then the average is 95. If I average 94, 94, 94, 95, 95, and 95 and the average is 94.5, does that mean the other half is stupid? Of course not, which is why people who keep saying this over and over are below average. You can tell because they aren't saying anything important.

depends on how you calculate average. More than half the population could be dumber than the mean intelligence. Intelligence is not a normal distribution, but skewed left.