ชื่อพรรคที่มีผู้แทนทั้งคณะกรรมการ "จัดสรร" และ
What are the names of parties that have both delegates on "Appropriations" committee and
df1 = pd.DataFrame(columns=['Party', 'Committee']); df2 = pd.DataFrame(columns=['Party', 'Party_ID'])
df2.loc[df2['Party_ID'].isin(df1.loc[df1['Committee'] == "Appropriations", 'Party'])]['Party']