I use the Mistel Barocco MD600. They have windows-only software but I’ve never used it. You can program everything on the keyboard itself.

It works great for me on Mac and Linux with separate key map/macro layers. I’m also a fan of split keyboards so that’s an added benefit.

It’s worth noting that the Vermont primary is open. There was a decent sized movement among Democrats to vote in the Republican primary against Trump instead of in the Democratic primary.