It's primarily because Blues States, and certainly their metro areas, produced most of the GDP AND because if those taxes were not redistributed as they are, many Red States would be 3rd world.
=========================
You just keep proving my points / High Taxes Crime OR Filth some times all 3

High Taxes and a Democratic Leader Ship
1. California and Oregon

California
Top tax rate: 13.3 percent.
With the highest top income tax rate in the nation, California takes more from its top earners than any other state.

Oregon
Middle class tax rate: 9 percent.
When combined with federal income tax, middle class residents of Oregon can expect to hand over 52.3 percent of their income to the government.

Portland is Oregon's third most-dangerous city, report says
Portland averages 5.2 violent crimes per 1,000 people and 56.8 property crimes per 1,000, both well above the national average.

https://www.monster.com/career-advice/article...come-taxes

And if you look at the map most of the cities are by the cost were you can ship into the United Stats and Out to overseas . So GDP better be high
======================================================
The price for those low taxes? Educational levels and health outcomes lower than

Blue States Barack Obama Won In 2012 Are More Educated Than Red States

You just keep proving my points / Dumber then a Box of Rocks / L O L