A public falling-out between Li Chen-hsiu and party chief Huang Kuo-chang is bad news for Taiwan's Taiwan People's Party, which can least afford visible infighting.

• Li Chen-hsiu has turned on Huang Kuo-chang openly, breaking the party's line rather than settling things quietly.
• The fight puts Huang's grip on the party in question at a moment when he is already the TPP's main lightning rod.
• The bigger worry is voters: one bloc of the party's supporters could walk away over the feud.
• The TPP has always sold itself as the clean alternative to Taiwan's two big parties, so a public brawl cuts at its main pitch.

Outlook: Expect more pressure on Huang to contain the row before it costs the party support heading into the next election cycle.