Taiwan's Taipei mayoral race is heating up as rival campaigns trade accusations over copied campaign material, while challenger Shen Bo-yang says he's closing in on the front-runner.

• Chiang Wan-an's team handed out a million copies of a new flyer called "Wan-an Alert," which critics say mimics Shen Bo-yang's earlier "Shun Bao" flyer series.
• Shen pushed back, saying his flyers promote future policy ideas while Chiang's are more like old-style campaign propaganda, though he joked the name "alert" fits since people usually run and hide from those.
• Shen says his team has cut Chiang's lead from 30 points down to 3-4 points, and is counting on weekly rallies to build enough momentum for a final comeback.
• Shen admits Chiang still has a stronger party organization and personal popularity behind him, so his camp is relying on supporters showing up in force.
• Street tensions are rising too, supporters from both sides have clashed verbally during canvassing events, with police stepping in to keep them apart.

Outlook: Expect both camps to ramp up flyers, rallies, and street campaigning as the vote draws closer and Shen tries to close the remaining gap.