แสดงผู้แทนและชื่อเขตที่พวกเขาอยู่
Show the delegates and the names of county they belong to.
df_election = pd.DataFrame(columns=['Delegate', 'District']); df_county = pd.DataFrame(columns=['County_name', 'County_id'])
df_election.merge(df_county, left_on='District', right_on='County_id')[['Delegate', 'County_name']]