In order to make all party references resolvable, we have created stubs for these otherwise unresolvable parties. These stubs are small xml files with only a minimal amount of data.
Party stubs contain the party name as found in the PDC data, a unique identifier, alternative names if it was obvious that multiple names refered to the same political entity, and a formation and abolition date.
The formation date is defined here as the first date a politician had a membership connected with the party, the abolition is defined as the last date a politician had a membership connected with the party.
In total 67 party stubs were created: