Are there any unvaccinated presidential candidates?

It seems like a good way to gain supporters would be for a presidential candidate to proudly announce during a debate that he is unvaccinated. It will make them stand out. And then any other candidates who haven't disclosed their vaccination status will feel compelled to disclose it.

Half of Republicans are unvaccinated. Are any of the presidential candidates unvaccinated?

Probably all of them are secretly unvaccinated.

Probably all of them were vaccinated with saline and don't know it.