However, after the 2005 Pan-Blue visits to mainland China, Soong and Chen stopped their partnership. The popular Taipei mayor Ma Ying-jeou was also elected the new head of the Kuomintang, and was considered the leading contender for the KMT nomination in the 2008 presidential election. However, it was uncertain whether the KMT and PFP could agree to field a common ticket. On the 2005 chairmanship election, Soong had made a televised endorsement of Ma's opponent Wang Jin-pyng.
However, after the 2005 Pan-Blue visits to mainland China, Soong and Chen stopped their partnership. The popular Taipei mayor Ma Ying-jeou was also elected the new head of the Kuomintang, and was considered the leading contender for the KMT nomination in the 2008 presidential election. However, it was uncertain whether the KMT and PFP could agree to field a common ticket. On the 2005 chairmanship election, Soong had made a televised endorsement of Ma's opponent Wang Jin-pyng.