Question on politician head shot.

[Dwig]

I think the reshoot is a distinct improvement. The first shot does give a "big head" look, most likely because he's leaning toward the camera and the lens was too short. When the subject leans toward the camera that much you need to use a rather long lens (2x the common "portrait length" or so) to avoid perspective making the shoulders seem small.

In the second shot, I would recommend a bit of retouching. Its low-key look (dark suit and dark background) and the subject's rather extended canine tooth give me a bit of an eerie reaction. I little modest retouch to paint some lower lip across the extended tooth should fix the issue. If you reshoot, consider having the smile such that the lower lip touches the teeth across the center and hide the larger canine.