Short term: Yes
Long term: No
If you look across the Anglosphere, one can see a broad realignment; the centre right coalition is downscaling and the centre left coalition is upscaling. This suggests that the trend is being caused by demographic and social factors that are out of the GOP's control, and that there is little to nothing for Republican pols can do to reverse it. They should instead be focusing on "the path of least resistance" as NC Yankee likes to put it, and work on maxing out the WWC and winnable Hispanics.
That said, Donald Trump is particularly toxic to the white, educated, prosperous, nominally religious sort that the GOP used to own. He has driven away votes that should still be winnable for his party. It wouldn't surprise me if you saw a modest Republican recovery in suburbia in the first couple of cycles after his presidency ends.
I would be surprised if such a recovery didn't change any realignment longterm, though.
