The nomination came from members of the German Bundestag representing The Left party (based on the few I checked, more parties may be represented.)

Not that you're wrong, just pointing out who this nomination comes from.

This particular nomination is by 17 members of the German federal parliament, the German Bundestag.

Yes. That's the downside of the Peace Prize such that there are zero barriers to entry for the requirements and everyone qualifies, unless you continue attending paid talks and interviews around the world and this is repeated in the mainstream media.

This is far less apparent in Physics, Chemistry and Economics though.