I actually doubt, especially since such a candidate would bleed support from liberals and progressives. He'd lose more on that end than winning a few moderately conservative voters.
The American left is not what it was back in 2016 or even 2020 where they were suicidal and eager to let Republicans win as often as possible. Roe v Wade changed that and finally made these idiots realize that things actually can get worse for them. The Democratic candidate would have to be someone really bad (literally Liz Cheney or something) for a sizable number of left-of-center voters to roll over and let Republicans win.