Show all party names and the number of members in each party.
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
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
[{'Party_name': 'Convention Peoples Party', 'count(*)': 2}, {'Party_name': 'Progress Party', 'count(*)': 4}, {'Party_name': '3', 'count(*)': 9}]