Despite a strong grip of the city council , Choi worked hard during his 4 years as Mayor to try to take control of and reform the local Democratic Party but was unable to gain the majority .
Choi and the Democratic slate campaigned against the ward system .
Despite a strong grip of the city council , Choi worked hard during Choi 's 4 years as Mayor to try to take control of and reform the Democratic   Party but was unable to gain the majority .
Choi and the Democratic slate campaigned against the ward system .