As you know, the US is more politically polarized than ever both as shown by the US map image below. The red/blue shows the net change in voters by county... basically suggesting that states are becoming physically polarized. As such, counties often have more in common with neighboring state's policies than their own. This has lead to a renewed interest in changing state borders to allow counties that feel disenfranchised to join adjacent states. One example are counties in Eastern Oregon and Northern California who are more aligned with the politics of Idaho. A group called Greater Idaho is trying move Idaho's border and has succeeded to get on some local ballots.
Independent of the federal and policy implications, is it better for states to keep polarization local (as is) or to have consolidated counties that create neighboring states with vastly different political views? What could go wrong?
Note: I am considering to help fund the Greater Idaho project and posting this in part to get your advice. Thanks.