He believed her “progressiveness” was real, when for the vast majority it is performative. When confronted with their ideas actually affecting them they drop it.
In this case, thankfully she did.
This is why, going back to the Obama birth controversy, I’ve said it could all be avoided by requiring candidates to prove their citizenship when filing to run. Especially since it is one of the few actual requirements for the job.
It wasn't until the New Deal that labor became almost exclusively Democrat.
Trump seems like he is finally destroying every legacy of the New Deal coalition.