Choi ran on a platform to make government work better and reforming the Democratic Party .
Choi won the June 2005 primary by a 56 - 44 % margin , defeating longtime incumbent Mayor George A. Spadoro .
Running on a platform to make government work better and reforming the Democratic Party , Choi won the June 2005 primary by a 56 - 44 % margin , defeating longtime incumbent Mayor George A. Spadoro .