By Lee I-chia / Staff reporterThe Chinese Nationalist Party’s (KMT) biggest challenge is itself and it should not drag the Taiwan People’s Party (TPP) into its internal affairs, Taipei Mayor Ko Wen-je (柯文哲) said on Friday. Ko, chairman of the TPP, made the remarks to the media during a visit to Estonia. KMT Taipei City Councilor Lee Ming-hsien (李明賢) on Friday said in Taipei that the KMT’s short-term challenge would not be the Democratic Progressive Party (DPP), but rather the TPP, which would compete with the KMT to be the second-largest party in the Legislative Yuan. If the TPP’s five new legislators perform better than the KMT’s 38 lawmakers, the KMT would face greater competition, Lee said, expressing concern that young people would choose to join the TPP over the KMT. Ko on Friday visited the e-Estonia Briefing Centre in the Estonian capital, Tallinn, and listened to reports about e-governance by the Estonian Information System Authority and the e-Governance Academy.