Laws were passed in late 1935 that stripped Jews of their right of citizenship in the Reich. The new regulations applied if you were Jewish and had any Jewish relatives. Even if you were not raised as a Jew, you could not be considered an Aryan.
This following is a voter registration card, which serves as a reminder that an election is coming up. It relays to the voter the location of the polling place and what issues are being decided. The handstamp on lower left of the front of the card was made at the polling place and indicates that the person voted. The front also has a nice souvenir cancel, dated April 1938.