At Power Line, John Hinderaker does a nice column on the internal migration from blue states to red states. The five biggest population losers are all blue states and four of the five biggest winners are red states.
Interestingly, the one winning blue state is Arizona, immediately adjacent to SoCal while CA is the biggest loser. Clearly AZ benefitted from many wanting to leave CA but not get too far away from relatives left behind in CA. Personal note: As CA emigres the DrsC still return there for holiday family gatherings.
Perhaps as important as the sheer loss of population from blue states is the amount of productive labor that migrants are taking with them. Blue states are losing precisely the wrong people.
Red States gained $191.93 billion in adjusted gross income (AGI), while the Blue States lost the same amount of taxable income.