Seats projected by demographic reach and regional support each turn.
40 seats, apportioned by share. A Hare quota of 138,056 votes buys one seat; 8 of the 40 were settled on largest remainder.
Why KAN voters lean toward Aoi Hasegawa over Ryo Matsumoto. Each driver is signed: + = lift, − = drag. Drivers are relative within this list and only move the persuadable slice of each party's vote, so their real effect is small. Coattail rows are direct share tilts in %. A raw vote lead does not equal the sum of these bars.
Ceiling this cycle: at most 20.0% of Ryo Matsumoto's vote can be persuaded across to Aoi Hasegawa, and 20.0% of Aoi Hasegawa's vote can be persuaded away. Registration lean sets the starting split and how hard a party is to move, not the final share. These drivers add up to 0.2 pts of that movable slice.