Here is Brendan Kirby writing at Lifezette.com about Leftist strongholds:
Residents of high-tax states are voting with their feet, moving south and west to the states with lower levies.
More than half a million Californians have moved to other states since 2010. Every day since then, an average of 386 people moved from New York to other states.
And Illinois lost so many people in 2016 that it actually fell one spot in the population rankings, losing its place to Pennsylvania — which itself has watched more people leave than come.
Increasingly, Americans are fleeing high-tax, deep blue states long governed by Democrats. And some experts believe the new tax law that takes effect this year will accelerate that trend, as upper-income taxpayers in such states will no longer be able to write off the full amount of their state and local taxes on their federal returns.
“For some, it will be the straw that breaks their backs … [For] some people, it will be the final factor,” said Pete Sepp, president of the National Taxpayers Union, a conservative taxpayers advocacy group based in the Washington, D.C., area. “It’s not that difficult to vote with your feet — particularly these days.”
Estimates released last month by the Census Bureau show 10 states lost at least 98,000 more residents to other states than they gained between the 2010 census and July 2017. The top four losers — New York, Illinois, California, and New Jersey — are solidly Democratic. Deep blue Connecticut, Maryland and Massachusetts also are among the top 10.
The other three states — Ohio, Pennsylvania and Michigan — generally are considered battleground states and voted for President Donald Trump in 2016.
Only people moving from other countries prevented New York, New Jersey, Michigan, Pennsylvania, Ohio, and Connecticut from losing population overall.
And Illinois, during that time span, actually did experience an overall population decline — of 29,542 — despite immigration from foreign countries.
Read more: Lifezette