First, it's it's easy to say it to a pollster, but may not be actually true. And probably isn't. I sure we can all think of quite normal , let alone truly horrible things even a Trump could do that would make him lose support from most of those people, if not all. But because it's a very pompous, self-righteous, self-aggrandizing "stick it in your face" thing to say to a pollster, you stick it to them.
But second, and more importantly, what this means is that Trump's REAL, undying base -- those who will support him to the end -- was just 20%. (Doing math, 60% of 34%.) And that 20% is spot-on in the range I suggested several months back, when I wrote that I thought his true, core base was only 20-25%, not the 38% it was at the time, that so many were pointing to.
So, to me, I find this "60%" figure very comforting. Not just because I think it shows me right (though, okay, there's that), but mostly because I wouldn't be surprised to see Trump's support drop near that level, and no politician can do anything with 20% support.