Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE party (party_name VARCHAR, party_id VARCHAR); CREATE TABLE Member (party_id VARCHAR)
### Question:
Show all party names and the number of members in each party.
### Answer:
SELECT T2.party_name, COUNT(*) FROM Member AS T1 JOIN party AS T2 ON T1.party_id = T2.party_id GROUP BY T1.party_id