After Chen left the office , Hsu backed to DPP .
Hsu then came out to support DPP candidate Frank Hsieh in the 2008 presidential election even though he had been connected with the pan-blue coalition camp during much of the period Chen Shui - bian served as president .
After Chen Shui - bian left the office , Hsu backed to DPP .
Hsu then came out to support DPP candidate Frank Hsieh in the 2008 presidential election even though he had been connected with the pan-blue coalition camp during much of the period Chen Shui - bian served as president .