I’m a blue state resident and will not argue the point about overall quality of life. But a quick look at net inflow/outflow rankings by state show there’s already a migration in the red state direction. There are many factors involved, but the cost of living is certainly one. Taxes are a large component of the cost of living. Increasing them on a segment of the population that has the resources to move elsewhere can only result in some additional migration. Whether that results in a net loss of tax revenue remains to be seen.