This is possible within the next several cycles:
Ohio leand R, Virginia leans D, New Mexico and Nevada are solidified. The upper Midwest trends R as deunionization/manufacturing depletion occurs and blue collar workers go that way.
Wisconsin and Iowa are toss ups. NC and GA go the way they've been trending with
NC being a toss up and GA being only lean R. Arizona follows its neighbors and sees a quick D trend, downgraded to lean R.
Florida remains a toss up.Pennsylvania is fools gold because while you see the R trend among blue collar workers in WPA (like you see in Ohio), Eastern PA is trending Democrat as it becomes more like its east coast neighbors. The Philly burbs up through Scranton is a populated area that really is swinging D.
This one several more cycles further, say maybe 2028/32:
Colorado continues to push D as its population becomes increasingly young and also Hispanic.
Arizona is a full swing state at this point. In the Midwest, Ohio has made the transition to an R state now, and Iowa to an extent as well.
Wisconsin and Minnesota are swing states. Virginia is now solid and North Carolina is leaning D as well.
Georgia is a swing state now.
Florida is still a swing state.So, down the line I foresee Arizona as a big swing state, Florida remains a swing state, we get one or two from the upper Midwest, and then possibly Georgia as well.
There probably will not be as many as I have predicted, but that is depending on the exact magnitude of the demographic/cultural changes, which is impossible for me to predict.