As for your second paragraph, that is your opinion. It still does not change the fact that George Washington wasn't sure a republican form of government would work here, making many things of your article irrelevant.
And, you know, over 2,000 years after Rome lost her Republican form of Government, wise men still debate its ideas and merits, as very relevant indeed to the ongoing human experience.
As for you query, I am not sure which you want the evidence for, the higher IQs of the lands where popular forms of Government seem to work? Or the lower IQs in much of the third world? Or the relationship between intelligence and intelligent voting? (I assume that you understand and accept the latter.)
Most of the studies that I have seen reported put the average IQs in the Near East in the 80's--with the exception of Turkey and Israel, where they are higher. (They may be in Lebanon, also, I do not have anything handy on that.)
William Flax