By Lee I-chia / Staff reporterTaipei Mayor Ko Wen-je (柯文哲) yesterday said that if people do not want to vote in the elections, they should just not vote, rather than casting invalid votes. His supporters are reportedly urging others to cast an invalid vote in the Jan. 11 presidential election. Ko, who is also chairman of the Taiwan People’s Party (TPP), was responding to a comment made by his close aide, former Taipei City Government adviser Tsai Pi-ju (蔡壁如), in a radio interview on Sunday. Many of Ko’s supporters have told her that they do not know who to vote for in the presidential election, so some people are initiating a “spoilt votes movement,” urging others to write “Ko Wen-je” on the ballot and cast invalid votes. Ko said that the CPP failed in controlling the Hong Kong elections this time, but that does not mean it is incapable of doing so.