Bloc party
A bloc party (German: Blockpartei), sometimes called a satellite party, is a political party that is a constituent member of an electoral bloc. However, the term also has a more specific meaning, referring to non-ruling but legal political parties in a one-party state (most notably communist states as auxiliary parties and members of a ruling coalition, differing such governments from pure one-party states such as Nazi Germany and the Soviet Union) although such minor parties rarely if ever constitute opposition parties or alternative sources of power.