The author of this article is committing the ecological fallacy: en.wikipedia.org
While it is correct that the states in question (those with a higher Hispanic population) did vote in a greater percentage (the "spread") for Romney vs Obama as compared to McCain vs. Obama, you cannot draw any conclusions about the voting behavior of the respective populations by race/ethnicity within the states in question.
No, but it does draw parallel to the intelligence of the overall voting population.
For those those who believe the country's economy is better off pandering to individual demographics...
The company that makes Twinkies (that's right...Twinkies) ...goes belly-up AFTER legalizing weed in 2 states...think about it.