The mayoral candidates in Taiwan's five major cities voiced concern Saturday for Lien Sheng-wen, the eldest son of former Vice President Lien Chan, who was seriously wounded Friday night in a shooting incident at a campaign rally. Lien Sheng-wen was stumping for a Kuomintang (KMT) city councilor candidate in suburban Taipei when he was shot in the face, allegedly by a man in the crowd. Incumbent Taipei Mayor Hau Lung-bin of the ruling KMT condemned the violence and called on the public to pray for Lien Sheng-wen's quick recovery. Hau's prime opponent, Democratic Progressive Party (DPP) hopeful Su Tseng-chang, expressed similar views and urged the police to get to the bottom of the matter as soon as possible. Apart from Taipei City, the elections for mayors, city councilors and ward chiefs are also being held in Taipei County (to be upgraded to Xinbei City) and three other major cities -- Taichung, Tainan and Kaohsiung. Eric Liluan Chu, the KMT candidate in Taipei County, said he wished Lien Sheng- wen a speedy recovery. Chu called on the public to continue to support the injured Lien. DPP Chairperson Tsai Ing-wen, who is running against Chu in Taipei County, asked the government to solve the case as soon as possible. Taichung Mayor Jason Hu headed to Taipei to visit Lien Sheng-wen, whom he called a 'good young man, ' and expressed his deep sympathy for the family. Following the incident, Lien Sheng-wen underwent a four-hour operation at National Taiwan University Hospital and is now in stable condition. A 29-year-old man surnamed Huang was killed at the rally when the gunman opened fire with a 9-millimeter pistol. 