They come from Canada, Belgium, South Africa, Uruguay, and elsewhere. Meanwhile, most have been members of the parliament or Senate of their country, province, or state. However, a couple are city mayors. What they all share in common, aside from being Deaf elected politicians, is that they all have used sign language during their official duties.
At the link, an infographic shows a timeline of when each Deaf elected politician first took office. Also included is a one-line summary of their political career. You can google the name of each person to learn more detail about them.
The web page is not fully accessible for people who use screen reading software. However, a transcript at the link provides the same text that is in the infographic for people who cannot see it.