Taiwan's Taipei mayoral race is a genuine toss-up a month before voting, with incumbent Chiang Wan-an still holding structural advantages despite recent polls showing DPP challenger Puma Shen slightly ahead.

• Polls show Shen leading Chiang by a few points, but the gap is within the margin of error, meaning the race is really a tie.
• A deeper poll question found more voters actually expect Chiang to win, even a quarter of DPP supporters themselves, showing lingering doubt about Shen's chances.
• Taipei's voter base still favors Chiang: older voters lean his way, and both his own party and the Taiwan People's Party base back him strongly, while the DPP hasn't won this seat in over 30 years.
• Betting activity on the prediction market Polymarket briefly favored Shen after the poll news broke, but a large buy order quickly pushed the odds back in Chiang's favor, suggesting market confidence in Shen's win is shaky.
• Shen's campaign still needs young supporters to actually show up and vote and needs to avoid provoking a backlash that mobilizes opponents, both unresolved risks.

Outlook: With a month left, the race remains a close contest where turnout among young voters and any late backlash could decide the outcome either way.