Blue states losing the "best and brightest" to red states would tend to reduce disparity, which is not what actually seems to be happening. If blue-to-red migration drives increasing disparity, it means that the loss to the blue state is less than the gain to the red state. Either those migrants became less productive in the process, or they were a net drag all along. Was that the point you meant to make?
None of the data present, in either the article or the comments, align with Texas or California. Together those two are about 20.6% of the total US population. While there probably is a growing divergence exactly as the article claims it appears the described cause of that divergence is completely out of alignment with what the article claims.
https://en.wikipedia.org/wiki/List_of_U.S._states_by_GDP_per...
https://en.wikipedia.org/wiki/List_of_states_and_territories...
Huge reason for what? Income growth is happening in blue districts not red.
> It is no question that trump is winning again.
Last I checked he's getting crushed in polls by almost every major dem candidate.
Last time I checked too, but it's been a few years since I checked...